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Q. A 150g ball and a 250g ball are connected by a 35cm long, massless, rigid rod. The balls rotate about their center of mass at 150g . What is the speed of the 150g ball?
Q. A stone is dropped from the roof of a building; 2.10s after that a second stone is thrown straight down with an initial speed of 18.0m/s, and both stones hit the ground at the same time. How long did it take for the first stone to hit the ground?
What is the frequency of light that has the wavelength in water of 788 nm if the refractive index for this light is 1.33.
Find out the sum of these four vector forces: 12N to the right at 35.0° above the horizontal, 31.0 N to the left at 51.5° above the horizontal, 7.45N to the left at 35.0° below the horizontal, and 24N to the right at 48.0° below the horizontal.
The gravitational force between two masses M and m separated by a distance r is 40 N. What is the new force when this distance is halved?
Determine the greatest vertical displacement of the pendulum (height). The mass lost by the rocket during these 30.0 is negligible. What impulse does an engine impart to the rocket?
Calculate the rates of solar heating
Assume that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two tires. If the gauge pressure in the tires is 78.5 lb/in2 and the area of contact between each tire and the road is 7.13 cm2, what is your we..
Determine the coefficient of kinetic friction between the block & the table.
A block is placed at the end of the frictionless ramp and is pulled up the ramp through a solid ball on the end of a string that passes over a frictionless pulley that does not affect the motion of the block or ball. The ramp is 3.40 meters long and ..
Find out the frequency of the fourth harmonic if the string is fixed at one end and free at other. (That is, if the free end is attached to a long string of negligible mass.)
A train is travelling up a 4.0 incline at the speed of 3.25 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily.
Assume that each person is about the similar distance from the center of the field and can generate the same level of sound intensity. How numerous people are at the game.
A fire in an enclosure has reached flashover, & the gas temperature is assumed to be uniform at 1000oC. The enclosure has an opening 3 m wide & 2 m high. Find the position of the neutral layer, measured from the bottom of the opening.
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