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A 0.22 m(micro)F capacitor by a 1.5-V battery. After being charged, the capacitor is connected to a small electric motor. Assuming 100% efficiency. A) To what height can the motor lift a 5.0-g mass?
A proton has an initial speed of 4.0*10^5 m/s. a) What potential difference is required to bring the proton to rest?
A small weight hangs from a string attached to the rearview mirror of a car accelerating at the rate of 1.07 m/s2. What angle does the string make with the vertical?
What minimum power must be supplied to the coils to maintain a temperature difference of 16.4°C between the bottom of the slab and its surface? Assume all the energy lost is through the slab.
What mass of water at 24.0 °C must be allowed to come to thermal equilibrium with a 1.95-kg cube of aluminum initially at 1.50 102 °C to lower the temperature of the aluminum to 77.0 °C?
If water at the top of the falls is at 13.3°C, what is the maximum temperature of the water at the bottom of the falls? Assume all the kinetic energy of the water as it reaches the bottom goes i
The particles fly apart and when the separation between them is 0.141 m, the speed of the 4.68 x 10-3 kg particle is 160 m/s. Find the initial separation between the particles.
The rocket engine fires for 4 seconds, producing a proplusive force of F=1000e^(-0.2t)Ib, and then shuts down. Assuming that the sled starts from the rest time t=0 and that the coefficient of kineti
A stationary ring of radius a lies in the yz plane and has a uniform positive charge Q. A small particle that has mass m and a negative charge -q is located at the center of the ring. a) Find the f
How fast must the bucket move at the top of the circle so that the rope does not go slack?
At what rate must a cylindrical spaceship rotate if occupants are to experience simulated gravity of 0.52 g? Assume the spaceship's diameter is 41 m, and give your answer as the time needed for one
The first peson is initially moving forward with a speed of 2.50 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Disregard
What are (a) the magnitude of the cat's centripetal acceleration and (b) the magnitude of the cat's average acceleration during the time interval t2 - t1, which is less than a period of the motion?
A plane flying on a heading(use bearing) of 60 degrees at 150km/h is four hours from it's destination (600km). The plane experiences a 50km/h headwin out of the Northeast at 60 degrees for the next
The Saturn V, developed at NASA Marshall Space Flight Center (MSFC) under the direction of Wernher Von Braun, was the largest in a family of liquid-propellant rockets that solved the problem of gett
A 38.0 kg child swings in a swing supported by two chains, each 3.00 m long. (a) If the tension in each chain at the lowest point is 356 N, find the child's speed at the lowest point.
A stick of mass m and length 2r is arranged to make a constant angle theta with the horizontal, with its bottom end sliding in a circle on a frictionless ring of radius r. What is the frequency of t
Determine distance traveled by the particle during the time interval t = 0 to t = 4s. (hint: block starts moving from the positive x-axis and then goes back to other way.)
A 5.5 box is on a frictionless 41 slope and is connected via a massless string over a massless, frictionless pulley to a hanging 2.1 weight. What is the tension in the string if the 5.5 box is held
You wish to pass a current through the coil to produce a field that, when combined with the earth's field, creates a net field with the same strength and dip angle (60 below horizontal) as the earth
If this air (the 2500 g) is stored in a cylindrical tank of radius 1.59 what would have to be the length of the tank? (Answer in meters)
Assuming that all the energy dissipated by kinetic friction goes into melting a small mass, m, of the ice, and the rest of the ice block remains at -1.5 degrees C, determine the value of m.
A particle moving in a laboratory at 0.8c decays after traveling 3m. How long did it exist as measured by an observer in the laboratory?
If the power output stays constant but the frequency is doubled, what is the amplitude of the wave?
Given a fixed area A, what should the rectangle look like if you want the required torque to be as large as possible? What is the upper bound on the torque?