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You are a space traveller and you land on the surface of a new planet. You decide to drill a tunnel through the center of the planet to the opposite side of the planet. Your idea is to use this tunnel to easily transport rocks from your location to the opposite side of the planet. So, you drop a rock in the tunnel and it falls down the hole toward the center of the planet, passes through the center of the planet, then makes it to the opposite side of the planet. Assume the planet is a uniform solid sphere of radius 8.50×106 m. The rock is dropped from rest into the hole, and it initially has an acceleration of 10.70 m/s2. How long will it take to make it to the other side of the planet?
A block is on a rough horizontal surface. A horizontal force of 5N is applied to the block. What is the frictional force exerted on the block
find frequencies of vibration of the piano wire. Car 1 has 3 times the mass of car 2, but only 0.5 as much kinetic energy. What is the ratio between the speeds of the two cars (v1/v2)? You must type your answer as a numerical value.
Graphically determine the resultant of the following three vector displacements: (a) 34m, 25 degrees north of east ;(b) 48m, 33 degrees east of north; and (c) 22m, 56 degrees west of south.
A charge of -3.80 nC and a charge of -6.00 nC are separated by a distance of 60.0 cm. Find out the position at which a third charge of +7.30 nC could be placed so that the net electrostatic force on it is zero.
A 4.5kg squid takes in 1.75kg of water while at rest, and then expels the water at a speed of 3.5m/s, calculate the work done by the squid's muscles during this process
64 moles of an ideal monatomic gas is at an initial temperature of 135 degrees celcius. What is the final temperature of the gas
A lens forms an erect image of a real object. The image is twice the size of the object and appears to be 40 cm from the lens
Prism of refractive index 1.53 is placed in water of refractive index 1.33. If the angle of the prism is 60. Calculate the angle of minimum deviation in water
A double slit experiment has two different colors. The second-order bright fringe using 650nmred light is in the same place as the third-order bright fringe of the other color
Find the pressure difference on an airplane wing if air flows over the upper surface with a speed of 114 m/s , and along the bottom surface with a speed of 105m/s
A car is traveling along a straight road at a velocity of +27.6 m/s when its engine cuts out. For the next 1.40 seconds, Find the velocity of the car at the end of the initial 1.40-second interval
At what temperature would the rms speeds be equal to the escape speed from planet earth.
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