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The speed of sound does not depend on the loudness or the frequency of sound. The speed of sound in dry air 0 degree celsius is 330 m/s. Explain how temperature and humidity affect the speed of sound.
15-kg of aluminum contains .2 kg of water. initially the water and the cup have a common temperature of 18 degrees c.
A 4.8-kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket
A 50 gram ball enters a a pendulum with mass 200 g. The pair then swings up to a height of 14.5 cm. Find the initial velocity of the ball before the collision
The gravitational acceleration on the Moon is a sixth of that on Earth. The weight of an apple is 1.03 N on Earth. What is the weight of the apple on the Moon
A wire carries a steady current of 1.54 A. A straight section of the wire is 0.616 m long and lies along the x axis within a uniform magnetic field of magnitude 1.6 T in the positive z direction. what is the magnetic force on the section of wire
What is the escape speed on a spherical asteroid whose radius is 510 km and whose gravitational acceleration at the surface is 3.3 m/s2? How far from the surface will a particle go if it leaves the asteroid's surface with a radial speed of 1000 m/s? ..
A bartender slides a beer mug at 1.6 m/s towards a customer at the end of a frictionless bar that is 1.6 m tall. What are the speed and direction of the mug at impact
A neutron collides elastically with a helium nucleus(at restinitially) whose mass is four times that of the neutron. What is the speed of the neutron after the collision
What type of atom has been assigned a mass in order to act as a comparison for other types of atoms, Is the Earth's rotation used as a standard of time?
A rocket blasts off and moves straight upward from the launch pad with constant acceleration. What is the magnitude of the rocket's acceleration
The waves from a radio station can reach a home receiver by two paths. One is a straight-line path from transmitter to home, a distance of 22.0 km. Find the minimum height of the ionospheric layer
A ball of mass 1.020 g and positive charge q =45.2 microC is suspended on a string of negligible mass in a uniform electric field. We view that the ball hangs at an angle of theta=15.0 from the vertical. What is the magnitude of the electric field.
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