state three factors that limits accuracy of this method of simple pendulum in the determination of 'g'
During this experiment:
The fan should be switched off to prevent air resistanceThe stopwatch zero error should be noted and correctedThe angle of bob displacement should be small
Simple pendulum
The simple pendulum a system that moves in an oscillatory motion. It consist of a suspended mass on a string with length placed on a fixed support.
The acceleration due to gravity can be measured using a simple pendulum. During this experiment:
The fan should be switched off to prevent air resistanceThe stopwatch zero error should be noted and correctedThe angle of bob displacement should be smallFind out more on Simple pendulum at: https://brainly.in/question/1050570
5
What were the first atoms of the elements of existence at the start of the universe and the ones that make up 97 percent of all matter in the
universe?
OA. water and oxygen
OB. hydrogen and hellum
Oc carbon and nitrogen
OD. calcium and iron
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If your heart is beating at 76.0 beats per minute, what is the frequency of your heart's oscillations in hertz
b) Calculate the net work required to bring a 1300 kg car moving at 30 m/s to rest.
I Lolo my name is keshav and
Describe the sound produced by an instrument of length L that is open at one end. Include pitch, frequency, timbre, nodes and antibodies
The sound produced by an instrument of length L that is open at one end
usually has a high frequency.
What is Sound?This is a form of vibration which travels along an acoustic wave through a
media which could be solid, liquid etc.
Sopubd produced by an instrument which has an open end has a high
frequency and pitch, nodes , timbre and a low antinode. These are all the
properties of sounds by the instrument.
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A ball is in free fall after being dropped. What willthe speed of the ball be after 2 seconds of free fall?
So, the speed of the ball after 2 seconds after free fall is 20 m/s.
IntroductionHi ! I'm Deva from Brainly Indonesia. In this material, we can call this event "Free Fall Motion". There are two conditions for free fall motion, namely falling (from top to bottom) and free (without initial velocity). Because the question only asks for the final velocity of the ball, in fact, we may use the formula for the relationship between acceleration and change in velocity and time. In general, this relationship can be expressed in the following 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] = speed after some time (m/s)[tex] \sf{v_1} [/tex] = initial speed (m/s)t = interval of time (s)Problem SolvingWe know that :
a = acceleration = 9,8 m/s² >> because the acceleration of a falling object is following the acceleration of gravity (g).[tex] \sf{v_1} [/tex] = initial speed = 0 m/s >> the keyword is free fallt = interval of time = 2 sWhat was asked :
[tex] \sf{v_2} [/tex] = speed after some time = ... m/sStep by step :
[tex] \sf{a = \frac{v_2 - v_1}{t}} [/tex]
[tex] \sf{(a \times t) + v_1 = v_2} [/tex]
[tex] \sf{(10 \times 2) + 0 = v_2} [/tex]
[tex] \boxed{\sf{v_2 = 20 \: m/s}} [/tex]
So, the speed of the ball after 2 seconds after free fall is 20 m/s.
What are some forces and motion?
U
Question 9
If a person moves a large box that weighs 10 Newtons 20 meters in 30 seconds, how much power was used?
Answer:
P = F d t = 10 ⋅ 20 30 = 6.7 W .
Explanation:
because
Which of the following best describes the primary cause of wave formation?
Answer:
Waves are most commonly caused by wind. Wind-driven waves, or surface waves, are created by the friction between wind and surface water. As wind blows across the surface of the ocean or a lake, the continual disturbance creates a wave crest. These types of waves are found globally across the open ocean and along the coast.
Explanation:
5. In a local bar, a customer slides an empty beer mug on the counter for a refill. The bartender does not see the mug, which slides off the counter and strikes the floor 1.4 m from the base of the counter. If the height of the counter is 0.86 m,
(a) with what speed did the mug leave the counter
(b) what was the direction of the mug's velocity just before it hit the floor?
Answer:
sorry about this question
5.40 * 104 NS
6. A wooden ball with a mass of 0.45 kg is at rest when it is tapped by a wooden mallet that applies an
average force of 83 N to the ball. After contact with the mallet, the ball moves forward at 1.3 m/s. How
long was the mallet in contact with the ball?
A. 7.0 milliseconds
B. 3.7 milliseconds
C. 2.4 milliseconds
D. 0.59 milliseconds
Answer:
A. 7.0 milliseconds
Explanation:
We know the formula: Force = [mass( final velocity - initial velocity )] / time
using the formula:
83 = 0.45 ( 1.3 - 0 ) / time
time = ( 0.45 * 1.3 )/ 83
time = 0.585/83
time = 7.0 milliseconds
The time for the mallet in contact with the ball is 7 milliseconds.
To find the time , the given values are,
Mass = 0.45 kg
Force = 83 N
Final velocity = 1.3 m/s, Initial velocity = 0 m/s.
What is Force?According to Newton's second law of motion, Force is equal to mass that is multiplied by the acceleration.
F = m.a
where, F - Force
m - Mass
a - Acceleration
Here, Acceleration = ( Final velocity - Initial Velocity) / ( Time )
Acceleration can be defined as the change in velocity with respect to time.
Force = [mass( final velocity - initial velocity )] / time
Substituting the given values in the formula,
83 = 0.45 ( 1.3 - 0 ) / Time
Time = ( 0.45 * 1.3 )/ 83
Time = 0.585/83
Time = 7.0 milliseconds
Hence, Option A is the correct answer.
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i am in 8th grade k12 pls help How is the temperature affected (increased or decreased) when the iron block is placed in the water?
a. the iron black (temp increase or decrease)
b. the water (temp increase or decrease)
Question 3 options:
Blank # 1
Blank # 2
An object is moving in a straight line with a constant acceleration. Its position is measured at three different times, as shown in the table below.
Time (s) 1 Position, (m)
37.70 9.600
39.30 18.048
40.90 33.792
Calculate the magnitude of the acceleration at t=39.30
The constant acceleration of the object is [tex]0.414\ m/s^2[/tex].
Acceleration of the objectThe acceleration of the object is constant, and the values at the three different positions is the same.
For the first position and time[tex]s = v_0 t + \frac{1}{2} at^2\\\\37.7 = v_o(9.6) +\frac{1}{2} a(9.6)^2\\\\ 37.7 = 9.6v_0 + 46.08a[/tex]
For the second position and time[tex]39.3 = v_o(18.048) +\frac{1}{2} a(18.048)^2\\\\ 39.3 = 18.048v_0 + 162.87a[/tex]
Solve the first and second equation together[tex]37.7 = 9.6v_0 + 46.08a\\\\39.3 = 18.048v_0 + 162.87a\\\\18.048: \ \ 680.41 = 173.261v_0 + 831.651a\\\\9.6: \ \ \ \ -(377.28 = 173.261 v_0+ 1563.552a)\\------------------\\303.13 = -731.901a\\\\-a = \frac{303.13}{731.901} \\\\-a = 0.414 \ m/s^2\\\\|a| = 0.414 \ m/s^2[/tex]
Thus, the constant acceleration of the object is [tex]0.414\ m/s^2[/tex].
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When the car uses gas to drive, it is converting chemical potential energy into kinetic energy.
True
False
Answer:
true
Explanation:
A car burns gasoline(Chemical Potential energy because it has stored energy released as it burns). This Chemical energy transforms into Kinetic energy(energy of motion) as the car moves.
Answer:
True.
Explanation:
the car takes the gas and turns it into energy that makes it move
PLEASE HELP WILL GIVE BRAINLEST!!!
Lunar Cycle Science Escape Room look it up i need to answer because I can't do it on my school computer, they can see everything i do!
.
Answer:
huh what do u want tho its nothing bad
Explanation:
A 25kg ball is thrown into the air. When thrown it is going 10 m/s. Calculate how high it travels.
Answer:
5m
Explanation:This is the number
the area under acceleration time garph represents?
Answer:
Change in Velocity because
[tex]at = v[/tex]
Explanation:
Remeber area is length times Width. In this case, the area under a accleraton vs time graph is Accleration Times Time. Which is velocity
pls help i am in8th grade k12
Answer:
please i dont understand this
If you have 12 atoms of hydrogen before a chemical reaction how many atoms of hydrogen will be president after the chemical reaction
Give an example of how a bicycle rider would accelerate? Explain the three different ways a bicyclist could
accelerate.
A cyclist can increase the speed of their bike in various ways such as, changing gears, positioning themselves properly, increase the pedalling rate
Ways in which a cyclist can increase the speed of a bicycle
Bicycle riders could accelerate/ increase their speed in various ways
By Changing the gears and by doing so increasing the speedBy Positioning themselves in a streamlined manner, this is so that they become aerodynamic hence they cut across airflow.By increase the rate at which they are pedalling the bicycle.Learn more about increasing bicycle speed here:
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(2) Put 5kg mass at left side (at 2m). This is fixed throughout the experiment! (3) Try to balance by putting 5kg mass at the right side. Write the position of the 5kg mass. Calculate the net torque. Torque= mass * g*length, and the unit for torque is N.m (4) Try to balance by putting 10kg mass at the right side. Write the position of the 10kg mass. Calculate the net torque. (5) Try to balance by putting 20kg mass at the right side. Write the position of the 20kg mass. Calculate the net torque. (6) What do you conclude?
We can conclude that as the mass on the right increases, the distance of the mass towards the right decreases. Also when the two masses balance, the net torque is zero.
What is torqueThe torque experienced by an object a given position is the product of the applied force and the perpendicular distance of the object.
When 5 kg mass is at 2 m on the left, another 5 kg at 2 m on the right will balance it.
[tex]\tau _{net} = (2 \times 5 \times 9.8) - (2 \times 5 \times 9.8)\\\\\tau _{net} = 0[/tex]
Position of 10 kg mass on the rightApply principle of moment
[tex]F_1r_1 = F_2r_2\\\\(m_1gr_1) = (m_2gr_2)\\\\r_2 = \frac{m_1gr_1}{m_2g} \\\\r_2 = \frac{m_1 r_1}{m_2} \\\\r _2 = \frac{5 \times 2}{10} \\\\r_2 = 1 \ m[/tex]
Net torque[tex]\tau_{et} = m_2gr_2 - m_1gr_1\\\\\tau_{et} = (10 \times 9.8 \times 1) - (5 \times 9.8 \times 2)\\\\\tau_{et} = 0[/tex]
Position of the 20 kg mass[tex]r_2 = \frac{5 \times 2}{20} \\\\r_2 = 0.5 \ m[/tex]
Net torque[tex]\tau_{et} = m_2gr_2 - m_1gr_1\\\\\tau_{et} = (20 \times 9.8 \times 0.5) - (5 \times 9.8 \times 2)\\\\\tau_{et} = 0[/tex]
Thus, we can conclude that as the mass on the right increases, the distance of the mass towards the right decreases. Also when the two masses balance, the net torque is zero.
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A sound wave travels through water. What best describes the direction of the water particles?
The water particles move perpendicular to the source of the sound wave.
The water particles move in the same direction as the vibrating source of the sound wave.
The water particles move in random patterns because the sound is diffracted in many directions.
The water particles do not move because the sound wave does not have enough energy.
The water particles moving perpendicular to the source of the sound wave best describes the direction of the water particles.
What are Transverse waves?These are the types of waves whose oscillations are perpendicular of the wave motion.
A sound wave traveling through water will cause ripples to form which are perpendicular to the source of the sound wave due to it being a transverse wave.
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1. The Gravitational Constant, G, is 6.674 X 10-11 m3/kg-s. Using Equation 3 below, what is
the force of gravity (Fa) between you and a table that is 2 meters away, assuming your
table weighs 20 kg? Remember to convert your weight to kg (1 lb. = 0.45 kg). Show your
work, and report your answer with 3 significant figures.
Fy = GX
mi X m2
Equation (3)
d2
spring stretches 14 cm when an object weighing 28 n is hung from it. what is the spring constant
Thanks to whoever answers
if a car it traveling mph, how long will it take to travel 300 mi
List the factors affecting the amount of heat produced in an element
Answer:
.The resistance, R of the conductor. A higher resistance produces more heat.The time, t for which current flows.
.The longer the time the larger the amount of heat produced
.The amount of current,
What's the name of the compound Kl?
Answer: Potassium iodide
Explanation: their you go
Answer:
Potassium iodide
Explanation:
Have a good day
anyone interested in mathematics or thoritical physics
Answer:
yup go ahead we'll try it
The mass in a pendulum clock completes one full back-and-forth oscillation in 1.25s.
What is the length of the rod (assuming its mass is negligible)?
Answer:
.38m
Explanation:
1.25 = 2π√l/g
removing square roots
1.5625 = 4*π^2*l/9.8
length = .38m
The table shows the pricing for four different brands of cat food.
Which brand costs the least per ounce?
A
B
C
D
Brand Cost
A $0.88 for 4 oz
B $1.05 for 5 oz
C $1.60 for 8 oz
D $2.28 for 12 oz
Answer:
D
Explanation:
trust me bro
