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A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.15 s for the tile to pass her window, whose height is 2.2 m. How far above the top of
A point source of light is 35.0 cm below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water. Water has an index of refraction
Calcaulate the number of electrons in a small electrically neutral silver pin that has a mass of 10.0 g.silver has 47 electrons per atom.
An electron in a circular path perpendicular to a constant magnetic field with a magnitude of 1.00mT. The angular momentum of the electron about the center of the circle is 3.000*10^-25. Determine t
The length of a simple pendulum is 0.73 m, the pendulum bob has a mass of 307 grams, and it is released at an angle of 12° to the vertical. With what frequency does it vibrate? Assume SHM. What
Find how far from the center of the earth this location is. The mass of the earth is 5.98x10^24 kg. The mass of the moon is 7.35x10^22kg. The mean distance between the moon and the earth is 3.85x10^
A cylindrical shell of radius 7.00 cm and length 230 cm has its charge uniformly distributed on its curved surface. The magnitude of the electric field at a point 23.0 cm radially outward from its
Find the force that the blood vessel must exert on the drop of blood in part (a)
A snowball is launched horizontally from the top of a building at v = 19.7 m/s. If it lands d = 35.5 meters from the bottom, how high is the building?
Find the maximum linear speed of a person sitting on the merry-go-round 6.50 m from the center. and Find the person's maximum radial acceleration.
What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by-side with Sally?
A diver stands at the end of of a massless diving board. (a) if the mass of the diver is 134kg and the board is 9m long, what is the torque due to gravity on the diving board with a pivot point at t
A planet with mass 5.98 × 1024 kg orbits a star with mass 1.99 × 1030 kg. Determine the kinetic and potential energy at the aphelion.
A 3.40 kg steel ball strikes a wall with a speed of 9.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.200
What is the amplitude of the temperature fluctuations produced by a sound of intensity, 10 W/m^2, in air at 20 degrees C and std atmospheric pressure?
A motorboat heads due east 13.3 m/s across a river that flows toward the south at a speed of 4.5m/s. What is the magnitude of the resultant velocity relative to an observer on the shore?
Investigators at the scene of an automobile accident where the driver drove off a 20.0 m high cliff determine that the auto was traveling at a speed of approximately 30 m/s upon impact with the grou
Find the following when the current in the solenoid increases to 5.0 A in a period of 0.90 s. the change in the magnetic flux through the coil.
Consider the three-pulley arrangement shown in the figure below. The three masses m_1, m_2 and m_3 have the values 2.0 kg, 5.0 kg, and 4 kg respectively. All the pulleys are frictionless, and the st
The wires are each 75.0 long and have a mass of 5.50 .If both of them are simultaneously plucked at the center, what is the frequency of the beats that they will produce when vibrating in their fund
What is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
The tractor beam exerts a constant force of on the shuttlecraft. Both spacecraft are initially at rest. How far does the starship move as it pulls the shuttlecraft aboard?
A potential difference of 90 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a pos
A hunter aims directly at a target (on the same level) 80.8 m away. If the bullet leaves the gun at a speed of 177 m/s, and misses by 1.02 m, at what angle should the gun be aimed so as to hit the t
Find the circular speed of a synchronous satellite in its path around the earth, given the following numbers: G=6.673 x 10^-11 (N-m^2/kg^2); earth mass = 5.98 x 10^24.