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The wheel of a racing car is rotating at 200 rpm at a given instant of time. In the next minute it makes 100 revolutions. The angular acceleration of the wheel is:
What are direction and magnitude of total velocity
The gravitational force between two masses M and m seperated by a distance r is 40 N. What is the new force when this distance is halved
Two polarizers are oriented at 54? to one another. Unpolarized light falls on them. What fraction of the light is intensity is transmitted
A person doing a chin-up weighs 655 N exclusive of the arms. During first 15 cm of the lift, each arm exerts an upward force of 355N on the torso. If the upward movement starts from rest, what is the person's velocity at this point.
A 99 kg man lying on a surface of negligible friction shoves a 71 g stone away from himself, giving it a speed of 4.0 m/s. What speed does the man need as a result.
Yusef pushes a chair of mass m = 55.0kg across a carpeted floor with a force F? p of magnitude Fp = 148N directed at ? = 35.0degrees below the horizontal, What is the magnitude of the acceleration a of the chair
A flying wedge spaceship is a right triangle in side view. At rest, the base and height (which form the 90° angle) measure 8.9 m, calculate the angle of the triangular nose to be
A certain kind of glass has an index of refraction of 1.648 for blue light of wavelength 439 nm and an index of refraction of 1.619 for red light of wavelength 677 nm
define the hazards for astronauts inside any spacecraft moving in the vicinity of a pulsar.
A movie camera with a (single) lens of focal length 70 mm takes a picture of a person standing 24 m away. what is the height of the image in millimeters on the film
Determine the period of the wave motion.
A student is running at her top speed of 5.2m/s to catch a bus, which is stopped at the bus stop. For what time does she have to run in that case
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