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Assume you seated on a wheeled desk chair at your desk. Consider friction forces between the floor and the chair to be negligible. However, the friction forces between the floor and the desk are not negligible. When sitting at rest, you decide you need another cup of coffee. You push horizontally against the desk, and the chair rolls backward away from the desk.
(a) Draw a free body diagram of yourself during the push and clearly indicate which force was responsible for your acceleration.
(b) Compute the reaction force to the force that caused your acceleration?
(c) Draw the free body diagram of the desk and explain why it did not accelerate.
An unstable particle at rest breaks up into two fragments ofunequal mass. what is the speed of the heavier fragment
Two automobiles of equal mass approach an intersection. One vehicle is traveling with velocity 12.1 m/s toward the east, What was the initial speed of the northward-moving vehicle
A loudspeaker of mass 19.00 is suspended the distance of = 1.80 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.50. What is the tension in each of the cables.
An alpha particle is a helium nucleus and therefore consists of two protons and two neutrons. How much time passes before the alpha particle comes to rest
A 160 km long electric power line made out of copper is installed during the Spring months at an average temperature of 10.7 °C. What is the change in the length of the cable on a -30.4 °C cold Winter day
A large truck collides head-on with a small car. how do the forces acting between the truck and car compare during the collision
a cameraman on a pickup truck is traveling westward at 20 kmh while he videotapes a cheetah that is moving westward 30
A sodium surface, which has a work function of 2.46eV is illuminated with a wavelength = 300nm light. What is the deBroglie wavelength of these electrons
A car with a mass of 1234 kg is travelling around a circular track with a radius of 100.m and a tangential velocity of 23 m/s. Determine the centripetal acceleration of the car
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
suppose you wanted to be able to see small details on the moon using an optical telescope. what is the smallest
q1. at one point in a pipeline waters speed is 3.30 ms and the gauge pressure is 4.00times104 pa. find out the gauge
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