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A simple device that is used to test the strength of antifreeze in cars consists of a small tube that has several small, coloured spheres inside it. When antifreeze is admitted into the tube, some of the spheres will float, giving an indication of the strength of the antifreeze. How does this device work?
An unstable high-energy particle is created in the laboratory, and it moves at a speed of 0.950c.Relative to a stationary reference frame fixed to the laboratory, the particle travels a distance of 1.34*10-3 m before disintegrating.
Consider two masses, mp and mt, on a surface where friction is negligible. Write the expression for conservation of momentum in the x- and y-directions
A simple circuit is set up that only consists of a 12 V battery connected to a light bulb with a resistance of 4 Ohms. What current flows through the light bulb
When a ceiling fan rotating with an angular speed of 2.75 rad/s is turned off, a friction torque of 0.120 N.m slows it to a stop in 22.5s . What is the moment of inertia of the fan?
A 4.00 kg block is free from rest 2.0m high at the top of a 30 degree frictionless incline. The block makes a head-on elastic collision with another 3.00 kg block initially at rest on a horizontal surface at the bottom of the incline.
A particle of charge +3.03 x 10-6 C is 10.2 cmdistant from a second particle of charge -1.85 x 10-6 C.Calculate the magnitude of the electrostatic force between the particles.
The objective of a telescope has a focal length of 50 cm and thefocal length of the ocular is 2 cm. What is the angular magnification of the telescope
Steam at 1 MPa, 250°C is contained in a rigid vessel. It is now cooled to 150°C. The final quality (if applicable) of the vessel contents is
A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 14rpm in 9.8s, What force is required at the edge
The Earth's magnetic field is approximately 5 cross product 10?5 T. If the field produced with the current in a long straight wire 1.4 mm from the wire is equal to the Earth's field, what is the current in the wire?
The electric potential at a position located a distance of 20.7 mm from a positive point charge of 7.50×10-9C, Calculate the value of the second charge
A ray of light is incident on the surface of a block of clear ice at an angle of 35.0° with the normal. obtain the angle between the reflected and refracted light
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