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A skier is accelerating down a 30.0° hill at 4.00 m/s2 .
(a) What is the vertical component of her acceleration?
(b) How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 305 m?
Assume that radiant energy from the sun arrives at your location with an intensity of 850 W/m2. In this EM radiation, what are the maximum values of the radiated electric and magnetic fields?
A planet orbits a star once every 2.99 107 s in a nearly circular orbit of radius 1.51 1011 m. determine the tangential speed of the planet
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.137 liters per second, At what speed does the water exit the nozzle
an electric field as shown in the figure. an electric field of 1000. v/m is directed toward the right. The ball has a mass of 2.00x10^-3 kg, what is the net charge on the ball
While crossing campus you get your directions mixed up. You start traveling 278 m East; you then travel 101 m traveling 37 North of East, What is your final distance from where you started
A doubly charged helium atom whose mass is 6.6 * 10^- 27 kg is accelerated by a voltage of 2400 V. What is its period of revolution
In 1926, Albert Michelson measured the speed of light with a technique similar to that used by Fizeau. Find the required angular speed
The light bulb used in a slide projector draws a power of 480 watts when operating on 120 volts. What is the bulb’s resistance? What is the current which is passing through the bulb?
the specific heat of a 96 g block of material is to be determined. the block is placed in a 25 g copper calorimeter
A particle of charge +9.2 ?C is released from rest at the point x = 55 cm on an x axis, What is the kinetic energy of the particle at the instant it has moved 12 cm if Q = +61
An electron on the axis of an electric dipole is 23 nm from the center of the dipole. What is the magnitude of the electrostatic force on the electron if the dipole moment is 4.0 10-29 C·m? Assume that 23 nm is much larger than the dipole charge sepa..
Explain the reasons for salient features of the power grid, including the predominant use of alternating current rather than direct current, transmission of power at high voltages(often with bundles of wire rather than single conductors), the use ..
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