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A boy flies a kite with the string at a 30 degree angle to the horizontal. The tension in the string is 4.5 Newton.
Determine how much work does the string do on the boy if the boy stands still?
Find how much work does the string do on the boy if the boy walks a horizontal distance of 11 meter away from the kite?
Find how much work does the string do on the boy if the boy walks a horizontal distance of 11 meter toward the kite?
A 5.00 mL syringe has an inner diameter of 6.00 mm, a needle inner diameter of 0.210 mm, and a plunger pad diameter (where you place your finger) of 1.2 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100..
A 25 kilogram boy on a playground swing moves with a speed of 4.5 m/s when the 3.0 meter long swing is at its lowest point. Find the angle that the swing makes with the vertical when the boy is at the highest point
A conducting rod ( length = 80 cm ) rotates at a constant angularrate of 15 revolution per second about a pivot at one end. Auniform field (B = 60 mT) is directed perpendicularly to the planeof rotation. what is the magnitude of the emf induced betwe..
A rifle with a weight of 40 N fires a 4.5-g bullet with a speed of 230 m/s. Find the recoil speed of the rifle
An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons with charge q = +2(1.6 x 10-19 C ) is moving perpendicular to a magnetic field of 0.530 tesla at a velocity of 3.00E+6 m/s, Calculate the acceleration of the alpha p..
Rectangular Loop A rectangular loop (area = 0.15m2) turns in a uniform magnetic field, B =0.17 T. When the angle between the field and the normal to the plane of the loop is π/2 rad andincreasing at 0.70 rad/s, what emf is induced in the loop?
A 4.5kg dog stands on an 18 kg flatboat at distance D = 6.10m from the shore. It walks 2.4 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore.
A capacitor with an initial potential difference of 75 V isdischarged through a resistor when a switch between them is closedat t = 0. At t = 5.0 s, the potential differenceacross the capacitor is 1.70 V.
Radio astronomers often study the radiation emitted by a hydrogen atom from a transition between the two hyperfine levels associated with the ground state
a 15n block is now immersed in a salt water density 1030 kgm3. determine the buoyant force acting on the block if the
Your new super power Heat-O-Matic insulated blender has both a violent chopping blade and a heating element, what amount of heat flowed into the water from the heating element
The equation of a transverse wave traveling along a very long string is y = 5.0 sin (0.055 ?x + 6.0 ?t), where x and y are expressed in centimeters and t is in seconds. Determine the amplitude of propagation of the wave.
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