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A steady horizontal force F of magnitude 21 N is applied at the axle of a solid disk as shown. The disk has mass 2.0 kg and diameter 0.10 m. What is the linear speed of the center of the disk after
Point A is located 0.75 m away from a charge of -3.90 x 10-9 C. Point B is located 0.35 m away from the charge. What is the electric potential difference VB - VA between these two points?
Calculate the buoyant force due to the surrounding air on a man weighing 800N . Assume his average density is the same as that of water, and surrounding air temperature is 0 degrees Celsius.
A hole of radius 1 mm is at the bottom of a large water storage tank that is 15 m high. What is the volume flow rate (Av) of the water out of the whole?
Assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used.
What phase difference between two otherwise identical traveling waves, moving in the same direction along a stretched string, will result in the combined wave having an amplitude 1.20 times that of
Force 2 has a magnitude of 20.0 N and points along the +x axis. What must be the magnitude and direction (specified by the angle in the drawing) of the third force 3 such that the vector sum of the
The wire is 120cm long and is vibrating in its third harmonic. If the speed of sound in air is 340m/, what is the speed of transverse waves in the wire?
A baseball just clears a 3.20-m wall that is 113 m from home plate. If the ball leaves the bat at 35.0° and 1.20 m above the ground, what must its initial speed be?
(The sphere has been kept in an evacuated chamber, so very few charges have leaked off). In a separate experiment with a Geiger counter we find beta particles shooting out at the average rate of 1.0
A ball is thrown with a velocity of 20 m/s @ 60o from the x-axis. The ball lands at the same height as it was thrown. (a=-9.8 m/s2 ) Using the previous information what are the parallel and perpend
A person having a spherical shape with mass M has a center of mass a distance h above a thin, infinite sheet of mass with mass density sigma. Determine the force on the person in terms of h, sigma,
What will a 20,000 Ω/V meter read, on its 1 V scale, when attached to a 1 V source with an internal resistance of 10k? What will it read when attached to a 10k-10k voltage divider driven by a
If a device is given a vibration of amplitude 3.2 cm, what should its frequency be in order to test for compliance with the 10g military specification?
A 2.20 mol sample of helium gas initially at 300 K and 0.400 atm is compressed isothermally to 1.30 atm. Note that the helium behaves as an ideal gas. Find the energy transferred by helium.
How long is the rock in the air from the instant it is released until it hits the bottom of the hole ?
A car slows down uniformly from a speed of 45 km/h to rest with an acceleration of -0.50 m/s^2. How long did it travel before coming to a stop? Give your answer in meters.
Two ants race across a table 52 cm long. One travels at 4.72 cm/s and the other at 3 cm/s. When the first one crosses the finish line, how far behind is the second one? Answers in units of cm.
For every action there will be opposite and equal reaction but why this is not being implemented in Balayya Babu movies as in the recent movie he says "for evey action they cannot be a reaction as l
A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.0 m long. The bowler hears the sound of the ball hitting the pins 2.90 s after the ball is released from hi
How far behind the train is the automobile when it reaches the speed of 18.4 m/s, assuming that the train speed has remained at 18.4 m/s? Answers in units of m.
(a) The magnitude of the vehicle's velocity (b) The direction of the vehicle's velocity relative to the space station Express the direction as an angle measured from the +y direction.
The defenders of a castle throw rocks down on their attackers from a 11.5 m high wall. If the rocks are thrown with an initial speed of 13.2 m/s, how much faster are they moving when they hit the gr
A speeder passes a parked police car at a constant speed of 21.1 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.7 m/s^2. How much time passes before the speed
Two speakers, one directly behind the other, are each generating a 235-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a li