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Q1. A merry-go-round rotates at the rate of 0.30 rev/s with an 80 kg man standing at the point 2.0 m from the axis of rotation.
What is the new angular speed when the man walks to a point 0.8 m from the center? Assume that the merry-go-round is a solid 28 kg cylinder of radius 2.0 m.
Q2. What is the velocity of the beam of electrons that go undeflected when passing during perpendicular electric and magnetic fields of magnitude 4700 V/m and 3.6×10-3 T, correspondingly?
Obtain an expression for the velocity
Find out the work completed by neoconservative forces in stopping plane. At the nozzle exit, diameter is 2.5 cm and the density is 1.29kg/m^3. What is the speed of the air as it leaves the nozzle.
Assuming the diver has inhaled a negligible amount of air from the tank, what is the temperature of the ocean water.
A 64-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 834 N. What is the acceleration of elevator.
A rattlesnake can strike with the acceleration equivalent to an increase in speed from 0 to 60 mi/h in 1/2 s. If the rattlesnake's head weighs 0.33 lb, what average power does the rattlesnake generate throughout its strike.
The parallel metal plate of a capacitor is seperated by a distance of 0.5cm and is connected to a 90v battery. Find an electric field between them and the surface charge density.
If you weigh 690 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 25.0 km.
What is effectiveness of battery as an energy storage device
Vector A points in the negative y direction and has a magnitude of 3 units. Vector B has three times the magnitude and points in the positive x direction. Find out the direction and magnitude of the following vectors.
when the field is vertical to the plane of loop, when the field makes a 90.0 angle with the normal to plane.
What is an angular speed about the center of mass
Eight lights are connected in parallel to a 116 V source by two leads of total resistance 1.1. If 240 mA flows through each bulb, what is the resistance of each? What fraction of the total power is wasted in leads.
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