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A 4 kg box is pushed up a frictionless 30 degree incline with a force of 40N. This 40 N force is parallel to the incline. Find the acceleration of the box and the magnitude of the normal force exerted by the box on the incline.
During a ride on the gravitron, a person finds herself stuck against the wall as she spins around with a frequency of 26.00 rpm, What is the diameter of the gravitron ride
A homeowner is trying to move a stubborn rock from his yard which has a mass of 1.150 × 103 kg. what is the minimum total length of board required to move the rock
A copper pipe with an outer radius of 0.016 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 2.1°C, Find the inner radius of the pipe
You have an uncharged capacitor (12 x 10-6 F) and a resistor (1000 ohms) connected to a battery of 200 V at time t=0, What is the final charge on the capacitor
Two nanowires are separated by 1.6 nm as measured by STM. Inside the wires the potential energy is zero, but between the wires the potential energy is greater than the electron's energy by only 1.4 eV.
I put a packing peanut on top of it, and it only took one rotation--or crank--to knock the material off from the machine and onto the ground. mass of the peanut=.001 kg, distance from the machine to the peanut=.0005m.
Consider the motion of an apple and the Earth as the apple falls to the ground. If the apple begins at the top of a tree of height 11 m, Estimate the mass of an apple
As part of a safety investigation, two 1900 cars traveling at 25 are crashed into different barriers. Find out the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 to stop, and (b) car that hits a concrete barrier an..
a group of atoms is confined to a very small point-like volume in a laser-based atom trap. the incident laser light
A 10.48-m ladder with a mass of 24.4 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 270N. What is the net torque acting on the ladder
If this amount were shaped into a cube, what would be the length of one edge of that cube (in meters)
High speed stroboscopic photographs show that the head of a 181 g golf club is traveling at 55.4 m/s, Find the speed of the golf ball just after impact
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