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A marble is thrown horizontally by a speed of 16 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle 50° with the horizontal. From what height above the ground was the marble thrown?
Two vectors have magnitudes of 10m and 15 m. The angle between themwhen they are drawn with their tails at the same point is65?. What is the component of the longer vector along the line of the shorter?
The mean free path of a molecule in a gas is 280 nm. What is the mean free path if the gas temperature is tripled at constant volume?What is the mean free path if the gas temperature is tripled at constant pressure?
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.20 10-10 T. How much energy does this wave carry through the window during a 65-s phone call
An astronaut living at a space station is in a constant state of free fall- the only force exerted on her and on the space station is the gravitational force due to the Earth. How can an astronaut determine her mass while on an extended stay in sp..
The radius of Earth is about 6.38 multiplied by 10^3 km. A 7.02 multiplied by 10^3 N spacecraft travels away from Earth. What is the weight of spacecraft at the following distances from Earth's surface: 6.38 times 10^3 km and 1.4 times 10^4 km.
Normal atmospheric pressure is 1.013 x 105 Pa. The approach of a storm causes the height of a mercury barometer to drop by 20 mm from the normal height. What is the atmospheric pressure during the storm?
Sound with a frequency 650 HZ from a distant source passes through a doorway 1.10 m wide in a sound absorbing wall. Find the number and angular directions of the diffraction minima at listening positions along a line parallel to the wall.
You observe that the hammer hangs at rest with respect to the bus when the angle between the rope and the ceiling of the bus is 79. Illustrate what is the acceleration of the bus?
A gymnast of mass 59 hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and presume that the rope does not stretch. Utilize the value for the acceleration of gravity.
A person enter a tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 17.0 second. Find how tall is the tower
A small 12.5g plastic ball is tied to a very light 27.8cm string that is attached to the vertical wall of a room. Find the magnitude of the electric field in the room
A line of negative charge lies along the x-axis from -3.40 cm to +5.30 cm. Calculate the net electric flux through the Gaussian surface
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