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When a body of mass m is moving with a speed v, it has kinetic energy associated with its motion. Energy is measured in kg*m^2*s^-2. If the speed of a moving body is increased by 25% while its mass remains constant, by what percentage does the kinetic energy increase?
Suppose you wish to fabricate a uniform wire out of 2.6 g of copper. If the wire is to have a resistance of R = 0.25 and if all of the copper is to be used, what must be the length of the wire in m and the diameter of the wire in mm.
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 -T magnetic field. The loop carries a current of 6.2 A. obtain the magnetic moment of the loop
A plane leaves the airport in Galisto and flies 159km 68 degrees east of north and after that changes direction to fly 242km at 48 degrees south of east, after which it makes an immediate emergency landing in a pasture.
An AC generator supplies an rms voltage of 240 V at 60.0 Hz. It is connected in series with a 0.450 H inductor, a 3.90 ?F capacitor and a 316 ? resistor. What is the peak voltage across the inductor
A vertically hanging steel wire has the following properties. Length=8.75m, Cross-Sectional area= 0.375 cm cubed. Y=2.10x10^11 Pa, B=1.62x10^11 Pa, S= 0.871x10^11 Pa, Proportional Limit=3.27x10^8 Pa, breaking stress=17.4x10^8 Pa.
a physics book of mass m is pushed against a wall by a force P that makes and angle (theta) with the horizontal. The co-efficient of static friction is 0.2. Find the normal force on the book
On a frozen pond, a 7 kg sled is given a kick that imparts to it an initial speed of v0 = 2.3 m/s. find the distance the sled moves before coming to rest
A 2.5hp electric motor on a water well pumps water from 10m below the surface. The density of water is 1.0 kg per liter. How many liters of water does the motor pump in 2.0hr
How would you describe why we have different atmospheric pressure on different level (height) of earth's atmosphere in molecular level (molecular behaviour and what causes such behaviour).
Two 8.0 coulomb light bulbs are connected in a 12 V series circuit. What is the power of both glowing bulbs
A pencil is held perpendicular to the optical axis of a concave spherical mirror. The pencil is 85 cm from the center of the mirror, What is the magnification of the pencil's image
An 81 kg person puts on a life jacket, jumps into the water, and floats. The jacket has a volume of 3.1 x 10-2 m3, What is the density of the life jacket
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