Explanation:
the water temperature increase or decrease
A body of mass 100g moving with a velocity of 10.0m/s collides with a wall .if after the collision it moves with a velocity of 2.0m/s in the opposite direction,calculate the change in momentum
Answer:
-1.2 kg - m/s
Explanation:
[tex]\pink{\frak{Given}}\begin{cases}\textsf{ A body of mass 100g moving with a velocity of 10.0m/s collides with a wall .}\\\textsf{ After the collision it moves with a velocity of 2.0m/s in the opposite direction.}\end{cases}[/tex]
And we need to find out the change in momentum of the body . Here ,
velocity before collision (u) = 10m/s velocity after collision (v) = 2m/s .We know that momentum is defined as amount of motion contained in a body . Mathematically ,
[tex]\sf\longrightarrow momentum (p)= mass(m) * velocity(v) [/tex]
Therefore change in momentum will be,
[tex]\sf\longrightarrow \triangle p = mv - mu [/tex]
Since the direction of velocity changes after the collision , the velocity will be -2m/s .
[tex]\sf\longrightarrow \Delta p = 100g( -2m/s -10m/s) \\ [/tex]
[tex]\sf\longrightarrow \Delta p =\dfrac{100}{1000}kg ( -12m/s) \\ [/tex]
[tex]\sf\longrightarrow \Delta p = 0.1 kg * -12m/s \\ [/tex]
[tex]\sf\longrightarrow \boxed{\bf \Delta p = -1.2 \ kg-m/s} \\ [/tex]
Acceleration is always measured in meters per second squared. Why is acceleration not measured in meters per second like speed? Explain.
Answer:
Because 'distance per second' is a velocity, not an acceleration.
Explanation:
Because 'distance per second' is a velocity, not an acceleration. For example, at 1 m/s an object is travelling a distance of 1 metre every second. But a rate of acceleration is a steady increase in velocity. So at 1 m/s^2, an object's velocity is increasing by 1 m/s every second.
as the distance between 2 objects increased, the gravitational force between them
Answer:
Becomes weaker
Explanation:
Hope this helps :)
The potential energy for a mass on a spring is proportional to the square of which of these quantities?
А. mass
B. frequency
с.period
D.displacement
E.velocity
Answer:
The answer is D. displacement
Explanation:
please help , I answered some of them but I just want to make sure if it's right
Answer:
are you having problems with something if so message this guy on
MAIN
motion with the forces acting on it.
Answer:
A force that resists the relative motion or tendency to such motion of two bodies in contact. uniform motion: Motion at a constant velocity (with zero acceleration). Note that an object in motion will not change its velocity unless an unbalanced force acts upon it.
Explanation:
A force that resists the relative motion or tendency to such motion of two bodies in contact. uniform motion: Motion at a constant velocity (with zero acceleration). Note that an object in motion will not change its velocity unless an unbalanced force acts upon it.
Worth 15 points
Please answer which one matches for each conversion
Answer:
distance - meters
speed - meters/seconds
time - seconds
velocity - meters/seconds
acceleration - meters/seconds²
A 50 kg bobsled slides down an ice track
starting (at zero initial speed) from the top of
a(n) 173 m high hill.
The acceleration of gravity is 9.8 m/s^2.
Neglect friction and air resistance and determine the bobsled’s speed at the bottom of
the hill.
Answer in units of m/s.
Hi there!
We can use the following kinematic equation:
[tex]v_f^2 = v_i^2 + 2ad[/tex]
The initial velocity is 0 m/s, so:
[tex]v_f^2 = 2ad[/tex]
vf = final velocity (? m/s)
a = acceleration due to gravity (g)
d = vertical height (m)
Plug in the givens and solve:
[tex]v_f = \sqrt{2gd} = \sqrt{2(9.8)(173)} = \boxed{58.23 \frac{m}{s}}[/tex]
Can someone explain what kinetic energy and potential magnetic energy mean?
Answer:
Kinetic energy is energy an object possesses due to its motion.
Kinetic energy equation: [tex]KE = \frac{1}{2} mv^{2}[/tex]
The faster and heavier an object is, the higher the kinetic energy.
Potential magnetic energy is the energy of an object that is able to do work because of its position in a magnetic field.
band of tissue in the body
that contracts and helps to
produce movement
Answer:
Muscle Tissue
Explanation:
Sorry if I'm wrong
A car moving with a velocity of 30m/s has a constant acceleration of -4m/s? What will be the velocity 3 seconds later?
-12m/s
b. 18m/s
C. 42m/s
d. 90m/s
Show Calculation:
Answer:
b. 18m/s
Explanation:
Vi(initial velocity) = 30m/s
a(acceleration) = -4m/s^2
t(time) = 3 sec
A force of 400.0N is exerted on a 1,250N car while moving it at a distance of 3.0m. How much work was done on the car?
Answer:
1200 J
Explanation:
Work=force * displacement/distance
Work=400 * 3
Work=1200 J
Formula for deriving initial temperature in linear expansivity
Answer:
∆L=aL∆T
Explanation:
that's the answer for your Question
3. A ball of mass 2.0 kg is attached to a vertical spring. The spring constant is 196 N/m. What is the period if it were to be in SHM?
-0.063
-0.63 5
-6.3 s
-63 s
PLEASEHELPME
The period of the ball in simple harmonic motion is 0.634 s.
What is period?Period can be defined as the time ( in seconds) taken for a body to complete one oscillation.
To calculate the period of the ball in SHM, we use the formula below.
Formula:
T = 2π√(m/k)............... Equation 1Where:
T = Period of the ballm = mass of the ballk = spring constantπ = pieFrom the question,
Given:
m = 2 kgk = 196 N/mπ = 3.14Substitute these values into equation 1
T = 2(3.14)√(2/196)T = 6.28√(0.010204)T = 0.634 sHence, The period of the ball in simple harmonic motion is 0.634 s.
Learn more about period here: https://brainly.com/question/21924087
A 100-g aluminum calorimeter contains 500 g of water at a temperature of 20ºC. Then a 140-g piece of metal, initially at 344ºC, is added to the calorimeter. The metal, water, and calorimeter reach an equilibrium temperature of 32ºC. What is the specific heat capacity of the metal? The specific heat capacity of aluminum is 910 J/kg ∙ K, and of water is 4190 J/kg ∙ K.
580 J/kg ∙ K
495 J/kg ∙ K
601 J/kg ∙ K
228 J/kg ∙ K
A bicycle is traveling with a speed of 12 m/s. The cyclist hits the brakes reducing the speed to 4 m/s in a time of 4.8 seconds. What is the acceleration of bike?
So, the acceleration of the bicycle is approximately -1.67 m/s² or it can be said to be decelerating approximately 1.67 m/s².
IntroductionHi ! Here I will help material about linear motion changes regularly, which is where you will hear a lot of the term acceleration. Acceleration occurs when an object's speed increases in a certain time interval. Acceleration can be negative which is called deceleration. The relationship between acceleration with velocity and time is manifested in the equation:
[tex] \boxed{\sf{\bold{a = \frac{v_2 - v_1}{t}}}} [/tex]
With the following conditions :
a = acceleration (m/s²)[tex] \sf{v_2} [/tex] = object's final velocity (m/s)[tex] \sf{v_1} [/tex] = object's initial velocity (m/s)t = interval of the time (s)Problem SolvingWe know that :
[tex] \sf{v_2} [/tex] = object's final velocity = 4 m/s[tex] \sf{v_1} [/tex] = object's initial velocity = 12 m/st = interval of the time = 4.8 sWhat was asked :
a = acceleration = ... m/s²Step by step :
[tex] \sf{a = \frac{v_2 - v_1}{t}} [/tex]
[tex] \sf{a = \frac{4 - 12}{4.8}} [/tex]
[tex] \sf{a = \frac{-8}{4.8}} [/tex]
[tex] \boxed{\sf{a \approx -1.67 \: m/s^2}} [/tex]
So, the acceleration of the bicycle is about -1.67 m/s² or it can be said to be decelerating around 1.67 m/s².
what would happen without genetic variation
Answer:
a population cannot evolve in response to changing environmental variables and, as a result, may face an increased risk of extinction. For example, if a population is exposed to a new disease, selection will act on genes for resistance to the disease if they exist in the population
Explanation:
hope this helps
Match each action with the object that is primarily responsible for causing that action.
Moon's orbit
Tides on Earth
Earth's orbit
Hi ! I will help you to explain about gravity. Gravity is one part of the force that will pull two or more objects that interact with each other to the center of their weight. Because it is a force, and interacts with mass, the gravitational force can also cause an acceleration called gravitational acceleration.The characteristic of gravity are:
Mass cannot be affected by gravitational acceleration, because mass itself has formed gravitational interactions.The weight of an object is something that can be affected by the acceleration of gravity, because weight is a derived quantity in Newtons (N)The lighter object will fall to the heavier object because the center of mass will be closer to the object with greater mass.ExplanationLet's go into more detail about my answer!
Moon's OrbitThe moon undergoes two motions, orbiting the Earth and orbiting the sun together. So, here the gravitational force from the Earth can be said to have more effect on the Moon. Without the influence of Earth's gravity, the moon will orbit the sun itself by the interaction of its own gravitational force with the sun.
Tides on EarthThe tides are caused by the Moon's gravitational force. Remember ! The Earth's gravitational force always points downwards to make a constant (so that water does not spill when it is hit by the Moon's gravity). The Moon's gravitational force also depends on how close it is to Earth.
Earth's OrbitLike the Moon, the Earth orbits the sun. However, the sun is now creating a gravitational field. Not only for Earth, but for all objects in the solar system.
See MoreHow long does it take the moon to go through an entire set of phases? https://brainly.com/question/26486572#26 question
An astronaut jumps to a height of 5.00m above the surface of the moon. If the acceleration due to gravity on the moon is 1.6 m/s², how long does it take for the astronaut to fall to the surface of the moon?
A. 1.01s
B. 2.48s
C. 3.09s
D. 6.17s
So, the time that taken for the astronaut to fall to the surface of the moon is 2.5 s.
IntroductionHi ! In this question, I will help you. In this question, you will learn about the fall time of the free fall motion. Free fall is a downward vertical motion without being preceded by an initial velocity. When moving in free fall, the time required can be calculated by the following equation:
[tex] \sf{h = \frac{1}{2} \cdot g \cdot t^2} [/tex]
[tex] \sf{\frac{2 \cdot h}{g} = t^2} [/tex]
[tex] \boxed{\sf{\bold{t = \sqrt{\frac{2 \cdot h}{g}}}}} [/tex]
With the following condition :
t = interval of the time (s)h = height or any other displacement at vertical line (m)g = acceleration of the gravity (m/s²)Problem SolvingWe know that :
h = height = 5.00 mg = acceleration of the gravity = 1.6 m/s²What was asked :
t = interval of the time = ... sStep by step :
[tex] \sf{t = \sqrt{\frac{2 \cdot h}{g}}} [/tex]
[tex] \sf{t = \sqrt{\frac{2 \cdot 5}{1.6}}} [/tex]
[tex] \sf{t = \sqrt{6.25}} [/tex]
[tex] \boxed{\sf{t = 2.5 \: s}} [/tex]
ConclusionSo, the time that taken for the astronaut to fall to the surface of the moon is 2.5 s.
See MoreTime that needed for hearing the splash of fallen rock in the well https://brainly.com/question/26485521The speed of the object at a certain height (free fall motion) https://brainly.com/question/26377041The relationship between acceleration and the change in velocity and time in free fall https://brainly.com/question/26486625The time take by the astronaut to jump to the surface of the moon from a height of 5 m with acceleration due to gravity is 2.5 seconds.
What is acceleration due to gravity?Acceleration is the rate of change of velocity. It is a vector quantity having both magnitude and direction. The change in magnitude or direction in velocity will make the change in acceleration of the body.
Let the time for a falling from a height h be t. The acceleration due to gravity is g. Then the expression connecting these parameters are written as follows:
h = 1/2 gt²
Given that h = 5 m
g = 1.6 m/s²
t = √(2 h/g)
= √(2 ×5/1.6)
= 2.5 s.
Therefore, the time taken to fall to the surface will be 2.5 s.
To find more on acceleration, refer here:
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A balloon can be charged by rubbing it with the sleeve of your sweater while holding it in your hand. You can conclude from this that a balloon is
It is possible to conclude from this that the balloon is an INSULATOR. It is because the balloon tends to stay any excess of charges.
What is an insulator?An insulator is any material and/or substance capable of staying any excess of charges immobile in a place.
The insulator acts to immobilize any excess of charge added to the insulating substance and/or material, thereby remaining indefinitely in a given place.
In consequence, if a given charge is transferred to an insulator, it will remain at its initial charging location.
Learn more about insulators here:
https://brainly.com/question/454728
Determine the height h of water that will support 1atmosphere pressure (Hint: 1 = = ).
J/PHY 002
Answer:
We neglect the pressure exerted by the water vapor on the surface of the water column.Pressure P=hdgP=1.01×10⁵N/m²Density d=1000kg/m³g=9.8m/s²Height of water column h =P/dg=1.01×10⁵/9.8×1000 m=10.31m
A jet flew from Kennedy Airport in New York City to Orlando, Florida, in
3 hours. Kennedy Airport and Orlando, Florida, are about 1,500 kilometers
apart. What was the velocity of the jet?
Answer:
500km/h
Explanation:
I don't know what units you need the answer in, but if the units were to stay the same, then that's the answer^.
Which one will have more pressure? Explain
Answer:
B
Explanation:
Because according to the bolye law . Pressure is inversely propotional to volume . So higher the pressure lower the volume. P1×V1=P2×V2
Answer:
B has more pressure.
Explanation:
This is the correct answer
please give.me brainliest.
a car goes from 0 to 100 km/hr in 10 seconds. What is its acceleration
Answer:
a= 2.7 m/s^2
Explanation:
acceleration: a
speed: V
Vf = final speed
Vi= initial speed (initial = beginning)
100 km/hour --> m/s
divide the speed value by 3.6
100/3.6= 27.8 m/s
[tex]a = \frac{final speed - initialspeed}{time}[/tex]
[tex]a= \frac{Vf - Vi}{t} \\[/tex]
[tex]a= \frac{27-0}{10}[/tex]
[tex]a= \frac{27}{10}[/tex]
a= 2.7 m/s^2
A bird is flying at a speed of 15 km/h due East. It then makes a sudden turn to the North, but continues to travel at a speed of 15 km/h. Which changed, speed or velocity, both, or neither? Explain your reasoning.
What has changed is the velocity. This is happen because :
Velocity is a vector quantity that is easily affected by changes in the direction of motion.The presence of this displacement vector causes the resultant velocity to be 15√2 m/s.ExplanationHi ! Here I will discuss about velocity and speed. velocity is different from speed. Velocity depends on displacement (movement relative to the starting point) divided by the value of time. On the other hand, speed depends only on distance (how far the object is moving) regardless of the starting point of the movement. Therefore, velocity is called a vector quantity (a value that is easily influenced by direction), while speed is called a scalar quantity because it does not care about direction.
ProofWhy do I say there that the resultant velocity is 15√2 m/s ? This is because there is a double direction that makes it necessary to calculate the resultant using the formula:
[tex] \sf{\sum v = \sqrt{(v_1)^2 + (v_2)^2 + 2(v_1)(v_2) \cos(\theta)}} [/tex] >> [tex] \sf{\theta} [/tex] = 90°
[tex] \sf{\sum v = \sqrt{(15)^2 + (15)^2 + 2(15)(15) \cos(90^o)}} [/tex]
[tex] \sf{\sum v = \sqrt{225 + 225 + 2(15)(15) (0)}} [/tex]
[tex] \sf{\sum v = \sqrt{450 + 0}} [/tex]
[tex] \sf{\sum v = \sqrt{225 \times 2}} [/tex]
[tex] \sf{\sum v = 15 \sqrt{2} \: m/s} [/tex] (Q.E.D)
What is a therapuetic modality in psychology?
Answer:
There are several modalities, or methods, of treatment: individual therapy, group therapy, couples therapy, and family therapy
Explanation:
Answer:
Modalities are therapeutic tools that we use to help our patients recover from surgery, injury or a condition that causes pain and dysfunction, so they can get back to the activities they enjoy.
I need Help ASAP I will give you brainlest and plus 5 stars ✨✨and plus thanks and 50 points EVeryONe need help this is due today so plz help me I need to turn it in today so plz help I will give everything if you do
Answer:
First answer C second answer B Third answer c
What is the best first aid procedure if an insect bite has a stinger in it?
A Squeeze the skin to force the stinger out
B Leave the stinger and wash the area
C Scrape the stinger off with a straight-edged object
D Pull the stinger out with tweezers
Answer:
Avoid using tweezers to remove the stinger, since squeezing it may release more venom. Wash the area of the bite with soap and water. Place a cold compress or ice pack on the area for about 10 minutes at a time to help reduce pain and swelling
Explanation:
so basically B, i hope this helps and its not too late!
First, remove the stinger with mild force and wash the area thoroughly with soaps. Apply cold compress or ice packs to avoid swellings. Hence, option B is correct.
What is histamines?Histamines are chemical substances in our body generating allergic action on skin. When some allergens or stimuli are exposed with our skin, histamine is produced.
Similarly if an insect with stinger bite on our skin, histamine is produced and allergic reactions occurs in our body. The bitten area has to be washed for minutes with soap. If any stinger persist on skin remove it.
Cold compress or ice packs are very helpful if the skin starts to swell. If any pain occurs, lower doses of pain killers can be taken. If necessary antihistamines have to be taken.
Find more on allergens:
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PLEASE USE KINEMATIC EQUATIONS!!!
A bumper car (Car A) accelerates at 1.5 m/s^2 to a speed of 6 m/s and then continues at that constant velocity until it strikes Car B 15 m away. Calculate the total time for Car A to travel 15 m.
The total time for car to travel the given distance is 2 s.
Time of motion of the car
The time of motion of the car is determined by applying second kinematic equation as shown below;
[tex]s = vt + \frac{1}{2}at^2\\\\[/tex]
where;
v is the constant speed = 6m/st is the time of motion = ?a is the acceleration = 1.5 m/s²s is the distance traveled by the car = 15 mThus, the total time for car to travel the given distance is 2 s.
Learn more about time of motion here: https://brainly.com/question/2364404
a geologist is studying another planet. she wants to make a compositional and a structural model of the planets interior. T o do this she needs to design investigations to answer a number of scientific questions for each question, state whether the answer will help develop a compositional model, structural model or both
Answer:
Is there a magnetic field?
both
What is the average density of the planet?
both
At what depths do seismic waves reflect?
structural
Does the magnetic field change over time?
both
What rock types are found on the surface?
compositional
What speed do seismic waves travel through different layers?
both
Explanation:
Questions about Earth’s magnetic field, average density, and the velocity of seismic waves will provide evidence for both models. The depths from which seismic waves reflect will inform structural models. The types of rock found on the surface will inform compositional models.
