16 km/h x 8 h = 128 km per day
800 km / 128 km per day = 6.25 days
it will take 6 1/4 days
1. During a pendulum's swing, the highest point is considered to have
and
a. high PE and low KE
b. low PE and high KE
c. high PE and high KE
d. low PE and low KE
If two objects are repelling each other, that means they have _________ electrical charges.
Answer:
the same
Explanation:
if that is what you are asking
When you use the front brakes on your bicycle, why does your body want to rotate over the front wheel
Answer:
Because the bike is slowing down at a faster rate than you are.
Explanation:
An object in motion will stay in motion. The bike is slowing down faster than the passenger. The bike will slow the rider down because the rider is hanging on but you will feel the force when the bike is breaking.
Newton's first law of motion - sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
A spring is stretched 5 cm from its equilibrium position. If this stretching requires 30 J of work,
what is the spring constant?
Answer:
Best answer will get Brainliest!!!
What is the volume scaled down by a factor of 1/10
Measurements:
Top: 7 in, both sides: 12 in, front: 12 in, back: 12 in, bottom: 7 in
Please help!
Explanation:
The period of a sound wave coming from an instrument is 0. 002 seconds. What is the frequency of the sound?.
[tex]\\ \tt\hookrightarrow Frequency (\nu)=\dfrac{1}{T}[/tex]
[tex]\\ \tt\hookrightarrow \nu=\dfrac{1}{0.002}[/tex]
[tex]\\ \tt\hookrightarrow \nu=500Hz[/tex]
Based on the article, which sentence BEST explains why scientists try to predict El Nino and La Nina years?
They know that El Ninos and La Ninas increase global warming.
They are worried about El Ninos and La Ninas slowing the rotation of Earth.
They want to prevent El Ninos and La Ninas from happening.
They know that El Ninos and La Ninas can cause damage to countries.
Answer:
El Ninos and La Ninas. Translation: The Boys and The Girls
Explanation:
when the cart has rolled halfway down the incline, the carts speed will be
Which of these would be considered a drawback of hydroelectric power in an area that previously did not have access to this energy source?A) I only) II only) IF only) I & II only
What is the velocity of an upward moving 500kg elevator that has 4000 of energy
Answer:
4 m/s
Step-by-Step Explanation:
E = mgh and h = E/mg
So if you put your numbers in the formula : h = 4000J/500 * 10
you will get h = 4/5 meters
use this , If the elevator moves from top to the ground in a constasnt acceleration you will have all energy (4000 J) transformed into acceleration to speed up its motion.
(All potential energy will be turned into movement energy). As explained in this formula;
mgh = mv²/2 , solve out (v) from the equation
v = √2gh = √2·10·4/5 (digits are together- not related to the problem, just for clarification) = 4 m/s
Answer the velocity of the elevator is
4 m/s
This life net is shown here hanging on a wall, but it is used by firefighters when a victim is trapped on an upper floor and cannot navigate a stairwell safely in a burning building. Evaluate this device and select ALL the statements that describe how this device works to safely allow victims to evade a fire. A) The life net provides a large surface area upon which the victim can aim and land. B) The life net decreases the force with which the person eventually lands on the grand. C) The life net acts like a trampoline, increasing the time that the momentum is changing. D) The life net returns the energy to the body of the victim upon the impact with the object. E) The life net decreases the time that it takes to reach the ground when jumping from a higher elevation.
The life net is used to rescue victims from a high rise building during a fire outbreak.
What is a life net?The life net is a net that is commonly used by fire fighters to catch people as they jump out of a building that is on fire. It is part of the rescue operation of fire fighters. It decreases the momentum change as the person lands.
The following are the statements that describe how this device works to safely allow victims to evade a fire;
The life net provides a large surface area upon which the victim can aim and land.The life net decreases the force with which the person eventually lands on the grand.The life net decreases the time that it takes to reach the ground when jumping from a higher elevation.Learn more about momentum: https://brainly.com/question/904448
Is the force on each object a push or pull force? leaning against a wall
kicking a football
carrying a suitcase
pressing the button for an elevator
opening a sliding door
Answer:
Is the force on the object a push or pull force?
leaning against a wall
push
kicking a football
push
carrying a suitcase
pull
pressing the button for an elevator
push
opening a sliding door
pull
Explanation:
Answer:
push
push
pull
push
pull
Explanation:
All of the following statements are ALWAYS TRUE about an object that has zero acceleration EXCEPT one. Which statement might be false? A. The object is at rest. B. The object's velocity is constant. C. The net force acting on the object is zero. D. Any frictional forces acting on the object are balanced by equal and opposite forces.
Answer:
B
Explanation:
Hope that helps!
A wave has a frequency of 17.6 Hz and a distance from crest to crest of 4.1 m. What is the speed of the wave
Answer:
12.m
Explanation:
PLEASE HELP Ill GIVE THE BRAINLIEST ...
Samantha throws a 1.0 kg soup can across the room.
a) Determine the amount of work she exerts on the can if she throws with 20 N of force and a distance of 0.5 m.
b) Determine the amount of power she produces if it takes her 0.5 seconds to throw the can.
describe the trends of the elements including boiling/melting points and conductivity in relation to the periodic table
Explanation:
modern quantum mechanics explains these periodic trends in properties in terms of electron shells. the filling of each shell corresponds to a row in the table
What is the relationship between an object’s mass and its gravitational potential energy?.
Answer:
If we’re talking about objects on the Earth, the gravitational potential energy is given by:
Explanation:
PEg=mgh
so the energy is proportional to the mass ( m ), but also to the strength of the gravitational field ( g ), and the height ( h ) to which the mass is lifted.
A force of 75 N is applied to a spring, causing it to stretch 0. 3 m. What is the spring constant of the spring? 0. 004 N/m 22. 5 N/m 75. 3 N/m 250 N/m.
Answer:
the answer is D. 250 N/m
Explanation:
Edge
The spring constant of the given spring is 250 N/m. Spring constant is the measure of the stiffness of the spring.
What is the spring constant?It is the measure of the stiffness of the spring or in other work how much a spring resists the deformation.
From Hooke's law,
[tex]F_s = -kx[/tex]
[tex]F_s[/tex] - force - 75 N
[tex]k[/tex] - spring constant
[tex]x[/tex] - displacement - 0.3 m
Put the values in the formula and calculate for [tex]k[/tex],
[tex]75 = -k \times 0.3 \\\\k = \dfrac {75}{0.3}\\\\k = 250 \rm \ N/m[/tex]
Therefore, the spring constant of the given spring is 250 N/m.
Learn more about spring constant:
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A circuit has a current of 3. 6 A and a resistance of 5. 0 Ω. What is the voltage applied to the circuit? 0. 72 V 1. 4 V 8. 6 V 18 V.
Answer:
18 V
Explanation:
According to Ohm's Law, current equals voltage divided by resistance. (I=V/R)
Using this, we can rearrange the equation to have it solved for voltage.
V=IR
Then, you plug in the values for the current and the resistance.
V=(3.6)x(5.0)
V=18
What kind of acceleration occurs when an object speeds up?.
Answer:
positive
Explanation:
Halley’s comet orbits the Sun in an elliptical path as shown.During its orbit, it moves faster when it is closer to the Sun than when it is further away.What can you conclude about the comet’s potential energy as it approaches the Sun? Explain.
Given what we know, we can confirm that as Halley's comet moves closer to the sun, we can expect its potential energy to be near its maximum.
How do we know this?We can conclude that its potential energy will increase as it comes closer to the sun, and will reach its maximum at the closest point to the sun. This is because the potential energy of an object is directly proportional to the force of gravity acting on that object. As Halley's comet approaches the sun, the sun's gravitational pull on the comet is stronger, and thus, its potential energy increases.
Therefore, given the relationship between gravity and potential energy, we can confirm that s Halley's comet moves closer to the sun, we can expect its potential energy to increase and be near its maximum.
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A circuit with a 20 V battery and two 5 Ω resistors in series. What is the current throughout the circuit?
Answer:
dont know
im going back to playing mario kart 8 delux
Explanation:
what makes something bouncy
Answer: The speed of the object traveling should be met with the opposite reaction, thus making something like a basketball bounce as high as the force applied to the ball, making both surfaces push off each other until kinetic energy ( form of energy that an object or a particle has by reason of its motion) is lost.
Difference between upthrust force and normal reaction force.
Answer:
Explanation:
Both are contact forces arising at the interface between two bodies. In the fluid this interface might be irregular, and it completely surrounds a submerged object. For a solid it is usually a single flat surface - but it can be a collection of surfaces, which do not need to be flat or regular, and which can surround the object
Upthrust occurs at a fluid-solid interface whereas normal reaction occurs at a solid-solid surface. However, it is possible to generate the same fluid-like phenomenon of upthrust by immersing a solid object in sand or small beads and agitating them to simulate the pressure of atoms. With
What is the power of 600 joules of work done in 4 seconds.
Explanation:
P=?
W= 600 J
T= 4
[tex]p = \frac{w}{t} [/tex]
[tex]p = \frac{600}{4} [/tex]
[tex]p = 150 \frac{j}{s} [/tex]
What laws did dalton use to support the atomic theory.
Answer:
the law of conservation of mass and the law of constant compositionthe law of conservation of mass and the law of constant composition
Why the electric bell will not work if the Electromagnet is replaced with a permanent magnet?
Please help!
Will give the brainliest !
As electromagnet are temporary magnets so we can easily change its properties. An electric bell uses an electromagnet which is not a permanent magnet.So the given statement in the problem that a permanent magnet is used in an electric bell is false
How can water boil without heat?
Answer:
Put water at room temperature into a vacuum chamber and begin removing the air. Eventually, the boiling temperature will fall below the water temperature and boiling will begin without heating. Or if you want to be easy but messy, add dry ice to a bowl of water and watch how the water starts to boil.
This model shows a ball being shot from the cannon. Which of these statements accurately describes the energy of the cannonball? Select ALL that apply. A) The kinetic energy is lowest at point E. B) The potential energy is lowest at point E. C) The kinetic energy is greatest at point C. D) The potential energy is greatest at point C. E) The ball changes from kinetic to potential energy at point A.
The potential energy of the model will be the greatest at point C while it will be the least at point E. Option B and D are correct.
What is potential energy?The potential energy of an object is due to its position. It can be given as the formula,
[tex]U = mgh[/tex]
Where,
[tex]U[/tex] - potential energy
[tex]m[/tex] - mass
[tex]g[/tex] - gravitation acceleration
[tex]h[/tex] - height
From the formula since the mass and gravitation acceleration is constant, the potential energy of the model will depend upon the height only.
The potential energy will be greatest at point C because the relative position of the ball is the highest from the earth.
The potential energy will be lowest at point E because the height of the ball is the least in this position.
Therefore, the potential energy of the model will be the greatest at point C while it will be the least at point E.
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The modern face-off was first known as a bully.
True
False
Answer:
The answer is True
Explanation: I hope you have an amazing day/night
The electrical voltage between the ends of a resistor is equal to 8 V. A student has two voltmeters available that measure up to 6 V. The voltages of the voltmeters are equal to 500 ohms and 600 ohms, respectively. What voltages will the connected voltmeters indicate? (Fig. 3.45)
Answer:
I = V / R
I1 = 6 / 500 = .012 amps for full scale deflection
I2 = 6 / 600 = .01 amps for full scale deflection
I = 8 / 1100 = .00727 amps thru load (actual current)
D1 = .00727 / .012 = .606 of full scale deflection
D2 = .00727 / .01 = .727 of full scale deflection
V1 = .606 * 6 = 3.64 V (of 6 V)
V2 = .727 * 6 = 4.36 V (of 6 V)
Check: V1 + V2 = 3.64 + 4.36 = 8 V
