Physics
Physics, 11.07.2019 00:30, thunder42

Conceptual questions about the work-energy theorem. reminder: if your explanation doesn't include a fact, equation, or calculation, it is wrong. you must answer in three sentences or fewer, though equations and diagrams may be used as well (a) an object is attached to a spring. in case a, the spring is compressed by 1 cm. in case b, the spring is compressed by 2 cm. by what factor is the energy stored in the spring greater in case b? a 2-kg object accelerates as a net force acts on it. during the 5 seconds this force acts, the object changes its velocity from 3 m/s east to 7 m/s west 3 ms- seconds later: - 7 m/s a student states: "the change in kinetic energy of this object during these 5 seconds was 40 j, and thus the work done on this object by the net force during this period was also 40 j." what, if anything, is wrong with this statement? if something is wrong, identify it, and explain how to correct it. if this statement is correct, explain why.

answer
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 16:40, byers024
Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward
Answers: 1
image
Physics, 22.06.2019 17:00, agelafa
Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?
Answers: 1
image
Physics, 22.06.2019 20:00, teescub9738
In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm
Answers: 1
image
Physics, 23.06.2019 00:20, tacowilliam20
The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 Ă— 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g
Answers: 2
Do you know the correct answer?
Conceptual questions about the work-energy theorem. reminder: if your explanation doesn't include a...

Questions in other subjects:

Konu
Mathematics, 03.04.2020 21:58