Physics, 15.06.2021 17:20 itscarterelliottt

An engineering student is gathering data on the motion of a model car traveling down a ramp. If energy is conserved, the potential energy of the car at the top of the ramp should equal the kinetic energy at the bottom of the ramp. After the first trail, the student calculates that the kinetic energy at the bottom of the ramp is less than the potential energy at the top of the ramp. Which of the following best explains the difference? A. the student did not include the effect of friction in his calculation
B. the student accidentally accelerated the car at the top of the ramp
C. the measure height of the ramp was less than the actual height
D. The car gained a small amount of mass as it moved down the ramp

Answers: 2

Show answers

Another question on Physics

Physics, 21.06.2019 21:40

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Answers: 3

Answer

Physics, 22.06.2019 00:10

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Answers: 3

Answer

Physics, 22.06.2019 01:00

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

Answers: 3

Answer

Physics, 22.06.2019 21:30

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane

Answers: 1

Answer

You know the right answer?

An engineering student is gathering data on the motion of a model car traveling down a ramp. If ener...

Questions