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A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 98 kg. The mass of the rock is 0.29 kg. Initially the wagon is rolling forward at a speed of 0.50 m/s. Then the person throws the rock with a speed of 16 m/s. Both speeds are relative to the ground. Find the speed of the wagon after the rock is thrown(a)directly forward in one case and(b)directly backward in another.
The star Cancri is 57 light-years from the earth and has a mass 0.85 times that of our sun. find the orbital period of the planet of Cancri
on one particular shot, his 1.00 g pellet gets stuck in the cheese, causing it to slide 25 cm before coming to a stop. If the muzzle velocity of the gun is 64m/s and cheese has a mass of 98 g, what is the coefficient of friction between the cheese..
q1. a dentists drill starts from rest. after 3.20 s of constant angular acceleration it turns at a rate of 2.46 104
At what height above the surface of the earth does the balloon have a speed of 7-m/s.
determine the value of IG. The support at B does not move while the measurement is taken. For the calculation, the horizontal location of G should be determined.
At one instant, a system has 30J of kinetic energy and 30J of potential energy. How much work was done by conservative forces
A planet has two small satellites in circular orbits around the planet. the first satellite has a period 18.0 hours, what is the period of the second satellite
An 8.0-kg block is set moving with an initial speed of 6.0 m/s on a rough horizontal surface. how far does the block travel before it stops
A goldfish is swimming inside a spherical bowl of water having an index of refraction n = 1.333. How many centimeters behind the glass
q1. an electrical generating plant operates at the boiler temperature of and exhausts the unused heat into a nearby
A solenoid 60 cm long has 5000 turns of wire with a 1.00 cm radius. Find the flux inside the coil when the wire carries a current of 3.0 A
A 1500 kg car increases its speed from 15 m/s to 18 m/s in 15 seconds. What is the resultant work done on the car
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