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Q1. A 100 kg truck moving at 10 m/s runs into a concrete wall. it takes 1.0 sec for the truck to completely stop. What is the magnitude of force exerted on the truck during the collison?
Q2. A player pushes a 300 N person riding a blocking sled up a 6.0 m long ramp using a force of 150 N. the peson was raised a vertical distance of 3.0 m the actual work done by the worker was?
The plates of a parallel-plate capacitor are 3.50mmapart, and each carries a charge of magnitude 75.0nC, What is the area of each plate
What is an actual mechanical advantage of the system
A 30-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, How high does she rise during this interval
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.64s, What is the mass of the grapes
The bones a a saber-toothed tiger are found to have an activity per gram of carbon that is 14.5 % of what would be found in a similar live animal. How old are these bones
A crate, mass = 60 kg, is pulled along a horizontal surface with a coefficient of kinetic friction ?= 0. 2 by a rope which makes an angle of 53 degrees with the horizontal. What is the acceleration of the crate
An electron entering Thompson's e/m apparatus has an initial velocity( in the horizontal direction only) of (5.00*10^6)m/s. the magnet used in the apparatus has a strength of 15.0mT. (a.) what electrical field will you need in order to produce zer..
A group of particles is traveling in a magnetic field of unknown magnitude and direction. You observe that a proton moving at 1.20 km/s in the + x-direction experiences a force of 2.10×10-16 N in the + y-direction, What is the magnitude of the mag..
A very thin bubble is floating in air. If the bubble strongly reflects green light (? = 520 nm), what is the minimum possible thickness of the bubble
he box is taken up a mountain where the air pressure outside the box is 8.00 104 Pa. The inside of the box is completely evacuated. Illustrate what is the magnitude of the force required to pull the lid off the box?
A charge of q = +7.22 ?C is located in an electric field. The x and y components of the electric field at this point are Ex = 6.48E+3 N/C, What is the magnitude of the force on the charge
A sphere of mass of m = 1.30 kg is first placed directly on the plate of an electronic scale. Calculate the density of the sphere
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