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A block of mass m=7.10 kg slides down a 30 degree incline which is 3.60 m high. At the bottom, it strikes a block of mass M= 3.00 kg which is at rest on a horizontal surface. (Assume a smoothe transition at the bottom of the incline, an elastic collision, and ignore friction.
Determine the speeds of the two blocks after the collision.
Two Polaroids are aligned so that the light passing through them is a maximum. At what angle should one of them be placed so that the intensity is subsequently reduced by half?
Initially, the translational rms speed of a molecule of an ideal gas is 460 m/s. The pressure and volume of this gas are kept constant, find the final translational rms speed of the molecules
A recording engineer works in a soundproofed room that is 50.0 dB quieter than the outside. what is the intensity outside
With its double helix structure, DNA is coiled like a spring. A biophysicist grabs the end of a DNA strand with optical tweezers, What's the DNA spring constant
Find the pressure at pump discharge, rate of flow of a pump, energy required by the pump, and size of the pump motor.
Find the electric energy density between the plates of a 225- parallel-plate capacitor. The potential difference between the plates is 360
assume you are 90 cm from a plane mirror. What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 5.5 mm.
A spaceship leaves earth (Event A), travels to pluto (which is 5.0 h away at the time), and then returns (Event B) exactly 11.0 h later. estimate the time measured between events A and B by the ship's clock
two rooms, one at 30 degree Celsius and the other at 10 degrees Celsius, Calculate the total power output of lit light bulbs required in the warmer room
The Mini Cooper is rated at the maximum power of 115. hp (1 hp=746 W), when moving at 80km/h. Suppose that the net force accelerating the car is constant.
A 37-kg block of ice at 0° C is sliding on a horizontal surface. The initial speed of the ice is 6.2 m/s, Determine the mass of ice that melts into wate
A motorist suddenly notices a stalled car and slams on the brakes, negatively accelerating at 6.2 . Unfortunately this isn't enough, and a collision ensues.
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