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A 1.7 kg ball strikes a wall with a velocity of 8.5 m/s to the left. The ball bounces off with a velocity of 7.3 m/s to the right. If the ball is in contact with the wall for 0.19 s, what is the constant force exerted on the ball by the wall?
A certain corner of a room is selected as the origin of a rectangular coordinate system. If a fly is crawling on an adjacent wall at a point having coordinates (2.0, 1.0), where the units are meters, what is the distance of the fly from the corner of..
a long horizontal wire carries a current of 48 amps. A second wire, made of 2.5 mm diameter copper wire, determine direction of the current in the lower wire
A bumper car with mass m1 = 102 kg is moving to the right with a velocity of v1 = 4.9 m/s. A second bumper car with mass m2 = 90 kg is moving to the left with a velocity of v2 = -3.3 m/s, What is the velocity of the center of mass of the system
The only force acting on a 1.9 kg body as it moves along the x axis varies as shown below. The velocity of the body at x = 0 is 4.0 m/s. What is the kinetic energy of the body at x = 3.0 m
after struggling to remove a refrigerator mass 100 kg. you finally apply enough force to get it moving. what is the
36 kg of a liquid metal with a latent heat of fusion of 33.18 kJ/kg freezes while at its melting temperature of 398 °C. Calculate the change in entropy of the metal
A 2.50-kg Pendulum is attatched to a string 11.4m stringis pulled aside until it is.386m above its lowest position and released. The pendulum is designed to emit sound waves at a frequency of 440 Hz; However, as it swings toward and away from an o..
Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance of the Earth-cloud layer system. What is the maximum charge the cloud can hold
A car engine wastes 90 percent of its energy as heat. If the car burns a gallon of gas (3785 g), Obtain how much heat does it dump into the air
Monochromatic light of wavelength 430 nm is incident on a soap bubble of index 1.57. What is the wavelength of the light in the bubble film? Answer in units of nm
A wire carries a current of 4.5 Amp in a direction of with respect to the direction of a magnetic field of 0.5 T. Obtain the magnitude of magnetic force on a 0.43 meter length of wire
How do domestic political institutions affect development? Select one: a. Colonial powers did not invest in their countries so colonies had little infrastructure at independence. b. Powerful interest groups at times oppose government policies ai..
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