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A uniform board with a length of 1.2 m and mass 5 kg is placed on two scales as show below A weight W with mass 20kg is placed on the board 20 cm from it center. Each balance is located 10cm from the end of the beam. What are the readings (in Newtons or in kg) on the left and right balance?
develop a hypothesis for how kernel color is inherited . the hypothesis should includea number of genes involvedb
The coefficients of kinetic and static friction between a 1000 lb refrigerator and flor are .4 and .45. when at rest the refrigerator is pushed with a horizontal force of 300 lb. what is the force of friction between the fridge and the floor?
A toroid of mean radius 27 cm and circular cross section of radius 1.7 cm is wound with a superconducting wire of length 1000 m that carries a current of 350 A. What is the magnetic field at the mean radius
A baseball player hits a home run and the ball lands in the left field seats, 7.6 meter above the point at which the ball was hit. Determine the initial velocity of the ball when the ball leaves the bat
three children are throwing snowballs at each other. child a throws a snowball with a horizontal velocity v. if the
the drawing shows two situations in which charges are placed on the x and y axes. they are all located at the same
A figure skater performs a triple axel. She rotates around her longitudinal axis three times while in the air. She is airborne for 0.8 s. Calculate her average angular speed during the jump
A projectile is fired straight upward at 166 m/s. Determine how fast is it moving at the instant it reaches the top of its trajectory
An electron with mass 9.11×10-31 kg moves with a speed of 2.10×106 m/s in a circle of 2.94 cm radius under the influence of a magnetic field. What is the radius of the proton's orbit
An astronaut on the Moon drops a rock straight downward from a height of 1.50m. what is the speed of the rock just before it lands
An object falls a distance h from rest. If it travels 0.5h inthe last 1.00s find the time and the height of its fall
Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible friction between his feet and the ice. A friend throws Olaf a ball of mass 0.400 that is traveling horizontally at 11.5 . Ola..
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