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A 60 kg skier is in a tuck and moving straight down a 30 degree slope. Air resistance pushes backward on the skier with force of 10 N. The coefficient of dynamic friction between the skis and the snow is 0.08. What is the resultant of the external forces that act on the skier?
As part of a safety investigation, two 1900 kg cars travelling at 19 m/s are crashed into different barriers. Determine the average forces exerted on (1) car that hits a line of water barrels and takes 1.7 s to stop, and (2) car that hits a concre..
The aorta has an inside diameter of approximately 2.1 cm, compared to that of a capillary, which is about 1.0 × 10^?5 m (10µm). how many capillaries does the circulatory system have
A 230V shunt motor having an armature resistance of 0.05 ? and a field resistance of 75?? draws a line current of 7 A while running light at 1120 rev/min. determine the total core and mechanical losses
A magnetic ?eld of 0.285 T exists in the region enclosed by a solenoid that has 329 turns and a diameter of 11.5 cm. What current is induced in the coil
What is magnitude of the linear acceleration of the hoop . Elucidate using Newton's Second Law of Motion, why you can throw a golf ball further than a bowling ball, still though you throw both at the similar angle and with the same amount of force.
A 25-ohm resistor, a 55-ohm resistor, and a 75-ohm resistor are connected in parallel and placed across a 9.0-V battery. What is the current through each branch of the circuit
10 A of current flows through a wire oriented perpendicular to a magnetic field strength of .2T, What is the magnetic force per unit length on the wire?
An airplane pilot wishes to fly due west. A wind of 80.0is blowing toward the south. What is the speed of the plane over the ground
Two long parallel wires seperated by 50cm both carry currents of 4.0 A in the same vertically up direction. Find the magnetic field midway between the wires
Wile E. Coyote and the Roadrunner are fictional cartoon characters. The premise of the cartoon is that Wile E. What is the magnitude of the impulse on the second wagon
Calculate the angle of refraction at the first surface
Two planets are on a collision course, heading directly toward each other at 0.250c. A spaceship sent from one planet approaches the second at 0.750c as seen by the second planet. find the velocity of the ship relative to the first planet
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