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In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 33 m/s (around 70 mi/h) in a time of 6.7 s. The mass of the car and riders
A long, thin solenoid has 811 turns per meter and radius 2.5cm . The current in the solenoid is increasing at a uniform rate of 75.9 A/s. a) What is the magnitude of the induced electric field at a p
An airplane has a mass of 28,500 kg and takes off under the influence of a constant net force of 42,500 N. What is the net force that acts on the plane's 79 kg pilot?
Two thin lenses with a focal length of magnitude 15.0cm , the first diverging and the second converging, are located 11.3cm apart. An object 2.00mm tall is placed 25.0cm to the left of the first (di
During a circus performance, a 71-kg human cannonball is shot out of an 17-m-long cannon. If the human cannonball spends 1.04 s in the cannon, determine the average net force exerted on him in the b
If you weigh 700N on the earth, what would you weigh on the surface of a neutron star that has the same mass as our sun and a diameter of 20.0 ?
Waves from a radio station have a wavelength of 358 m. They travel by two paths to a home receiver 15.7 km from the transmitters. One path is a direct path, and the second is by reflection from a mo
Suppose you walk 3.97 m down a 30° incline while holding a 1.05 kg block. The 3.97 m distance is measured as a displacement along the incline; not as a vertical change in height. How much work d
A laser beam of wavelength 537 nm is incident on two slits 0.263 mm apart. How far apart are the bright interference fringes on a screen 7.59 m away from the double slits?
The volume of a gas is changed along the curved line between A and B in the drawing below. Do not assume that the curved line is an isotherm or that the gas is ideal. (a) Find the magnitude of the
A 1200 kg car carrying four 84 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximu
If 41 grams of hot water at 75°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity?
An electron confined in a one-dimensional box is observed, at different times, to have energies of 12 {rm eV}, 27 {rm eV}, and 48 {rm eV}. What is the minimum length of the box?
Superman meets an asteroid in outer space that is threatening to hit the Earth. He hurls it at 800 m/s, as fast as a bullet. The asteroid is a thousand times more massive than Superman. Using conser
Constable Bob inspected skid marks near a traffic accident to determine the acceleration of initial velocity of the lawn mower involved in the accident. Bob measured the lawn mower skid marks to be
337 kg mass is attatched to a spring with a spring constant of 197 N/m so that the mass is allowed to move on a horizontal frictionless surface. The mass i released from rest when the spring is comp
The heat of vaporization of ethyl alcohol is about 200 cal/g. If 1.3 kg of it were allowed to vaporize in a refrigerator, how many grams of ice would be formed from 0°C water?
On a workday the average decibel level of a busy street is 80 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 45 every minute on a weekend, what is the dec
What is the fractional increase in the thread's length caused by the spider? same as that of the spider's thread?
A tennis ball with a speed of 8.0 m/s is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 6.0 m/s. If the ball is in contact wit
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 1.6 times that of t
Arlene is to walk across a high wire strung horizontally between two buildings 11.0 m apart. The sag in the rope when she is at the midpoint is 10.0°, as shown in Figure 4-42. If her mass is 56
A 415 g glass coffee cup is at room temperature of 20?C. It is then plunged into hot dishwater, 76?C. If the temperature of the cup reaches that of the dishwater, how much heat does the cup absorb?
A 0.700-kg ball is on the end of a rope that is 1.50 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The
At the bottom of the arc, Jack, whose mass is 65 kg, steps off. What is the maximum height of a landing ramp that Jill can reach as the swing continues?