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A wire 0.50 m long carrying a current of 8.0 A is at right angles to a 0.40-T magnetic field. How strong a force acts on the wire?
A 400g mass is attached to a spring causing it to stretch a vertical distance of 2cm. The mass is then pulled downward a distance of 4cm and released to vibrate with SHM. What is the spring constant?
People who do chin-ups raise their chin just over a bar (the chinning bar), supporting themselves only by their arms. Find the force his arms must exert on him during the accelerating part of the chin-up
A narrow beam of ultrasonic waves reflects off the liver tumor illustrated in the figure below. The speed of the wave is 8.4% less in the liver than in the surrounding medium. Decide the depth of the tumor.
ashlee pulls andy on a skateboard. ashlee pulls with a force of 52.2n to get it moving and 42.0n to keep it at a
A block of mass m is at restlying on the face of an incline plane. The plane makes an angle (theta) with the horiz Draw the free-body diagram showing all forces acting on the block
A 10.0 g object moving to the right at 15.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 34.0 cm/s
person walks 25.0° north of east for 3-km. How far would another person walk due north and due east to arrive at the equal location?
Light in a vacuum is incident on a transparent glass slab. The angle of incidence is 37.3°. compute the index of refraction of the liquid
how much work is required to turn an electric dipole 180deg in a uniform electric field of magnitude e 42.0 nc if p
Two isotopes ofa certain element have binding energies that differ by 14.03 MeV. Find the difference in atomic mass between the two isotopes
From the top of a cliff 80 meters high, a ball of mass 0.4 kilogram is launched horizontally with a velocity of 30 meters per second at time t=0. The potential energy of the ball is zero at the bottom of the cliff. Use g=0 meters per second square..
Helium is used to fill a balloon of diameter 31 cm at 23C and 1.5 atm. The mass of a helium atom is 4.0026 u, the conversion factor from u to kg is 1.66 × 10?27 kg/u, What is the average kinetic energy of each Helium atom
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