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In a common but dangerous prank, a chair is pulled away as a personis moving downward to sit on it, causing the victim to land hard onthe floor. Suppose the victim falls by 0.50 m, the mass that moves downward is 70 kg, and the collision on the floor lasts 0.082 s. what are the magnitude of the a) impulse and b) the averageacting on the the victim from the floor during collision?
Levitation by Light Pressure. Consider an isolated hydrogen atom of mass 1.66 x10^- 27 kg. Find the number of photons that must strike the atom per second, and the corresponding and optical power, for it not to fall under the effect of gravity, gi..
a parallel plate capacitor of plate area 110-2 m2 is filled with two dielectric slabs each with thickness 1.00 mm. one
A hamster runs in its wheel for 2.7 hours every night. how far does the hamster run in one night
What additional experiment can help you decide between these two possibilities.
When a nucleus of 235U undergoes fission, it breaks into two smaller, more tightly bound fragments. Calculate the binding energy per nucleon for 235U
By holding a magnifying glass 24 cm from your desk lamp, you can focus an image of the lamp's bulb on a wall 1.6m from the lamp. What is the focal lenghth of your magnifying glass
An airplane propeller is rotating at 1250rpm. Compute the propeller's angular velocity
A projectile is shot straight up from the earth's surface at a speed of 1.20×10^4 km/hr. How high does it go
A coil with 41 turns of wire is wrapped on a frame with a square cross-section 1.85 cm on a side. Find the magnitude of the induced current in the coil while the field is changing
question1jims dog sparky runs 45.0 northeast to a tree then 70.0 west to a second tree and finally 25.0 south to a
An alloy is made of 30% gold, 20% silver and iron. The specific heats of gold, silver and iron are 0.0308, 0.056 and 0.107 cal/go C, respectively. Calculate the specific heat of the alloy
The aluminum cable of a high-voltage transmission line carries a current of 600 A. What is the power lost to Joule heating in this cable
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