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Q. A thing, rigid, spherical shell with a mass of 4.00 kg and diameter of 0.200 m is filled with helium at 0 degrees celsius and 1 atm pressure. It is after that free from rest on the bottom of a pool of water that is 4.00 m deep.
A.) determine the upward acceleration of the shell.
B.) How long would it take for the top of the shell to reach the surface? Disregard the frictional effects.
Two people are holding up the ends of a 4.75-kg wooden board that is l = 2.00 m long. A m = 3.00-kg box sits on the board, 0.50 m from one end. What forces do the two people exert.
A highway curve with a radius of 555 m is banked properly for the car travelling 150 km/h. If a 1650 kg Porshe 928 S rounds the curve at 220 km/h, how much sideways force must the tires exert against the road if the car does not skid.
What is first order diffraction angle of light
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A projectile is shot from the edge of a cliff 115m above ground level with initial speed of 65m/s at an angle of 35 degrees with the horizontal.
The rms speed of the molecules in 1.8 of hydrogen gas is 1600 m/s. What is total translational kinetic energy of the gas molecules.
A 60 kg skier starts from rest at a height of H = 21 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. avoid the effects of air resistance and assume the ramp is frictionles..
A vertical tube open at the top contains 5.2 cm of oil (density 0.82 g/cm^3) floating on 5.2 cm of water. Find out the gauge pressure at the bottom of the tube.
Green light (λ = 546 nm) strikes a single slit at normal incidence. What width slit will generate a central maximum that is 3.00 cm wide on a screen 1.76 m from the slit.
A robot probe drops a camera off the rim of the 389 m high cliff on Mars, where the free fall acceleration is 3.7 m/s^2. Find out velocity with which it hits the ground and the time required for it to reach the ground.
Sketch a principle ray diagram showing the formation of the image. compute the position, size, orientation (erect or inverted), and nature (real or virtual) of the image.
Approximately how many atoms make up our planet? For simplicity, suppose the average atomic mass of the atoms is 14 . Avogadro's number gives the number of atoms in a mole.
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