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A lid is put on a box that is 14 centimeter long, 18 centimeter wide, and 8.0 centimeter tall and the box is then evacuated until its inner pressure is 4.6 x 104 Pa.
(a) Find how much force is required to lift the lid at sea level?
(b) Find how much force is required to lift the lid in Denver on a day when the atmospheric pressure is 67.5 kPa (2/3 the value at sea level)?
on a warm 30 degree celcius spring day you are watching richard take a buzzer and twirl it horizontally around on the end of a 2.0 meter long string. what is the angular speed
An automobile moving at 15 m/s is approaching a factory whistle that has a frequency of 500 Hertz. Find what is the apparent frequency of the whistle as heard by the driver
the drag on the hull of a ship depends in part on the height of the water waves produced by the hull. the potential
A Proton is traveling horizontally to the right at 4.5 x 106 m/s. Find how much time does it take the proton to stop after entering the field
The resistivity of the copper is 1.7x10^(-8)Ω.m. Calculate the number of turns of wire needed if the radius of the solenoid is to be 0.52 centimeter and calculate the length of the solenoid in centimeter
Light having a free space wavelength of ?o = 500 nm passes from vacuum into diamond (nd = 2.4). find the wave's speed and wavelength in the diamond
A 2.00-µF and a 6.70-µF capacitor can be connected in series or parallel, as can a 48.0-k and a 100-k resistor. Compute the four RC time constants possible from connecting the resulting capacitance and resistance in series.
Block A has a mass of 3.00 kg and rests on a smooth table and is connected to the block B which has a mass of 2.00 kg after passing over an ideal pulley Block B is released from rest. How long does it take Block B to travel 80 cm
A 75-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair; assume the weight is evenly distributed.
An arrow is shot vertically upward and then 1.99 s later passes the top of a tree 38.9 m high. How much longer will the arrow travel upward
A 8.60-kg block of ice, released from rest at the top of a 1.48-m-long frictionless ramp, slides downhill, reaching a speed of 2.88m/s at the bottom. What is the angle among the ramp and the horizontal?
A bat flies toward a wall, emitting a constant sound of frequency 2.00 rm kHz. This bat hears its own sound plus the sound reflected by the wall.
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