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Q. If you submerge 100g of 40°C nails in 100 g of 20° water with the specific heat of iron is 0.12cal/g *°C. what is the heat gained by the water to the heat lost by the nails. Can you show that the final temperature of the water becomes 22.°C.
Q. Two identical positive charges exert a repulsive force of 6.2 multiplied by 10-9 N when separated by a distance of 3.4 multiplied by 10-10 m. Calculate the charge of each?
Mrs. Smith has returned to work and feels well. She does not know why she needs to have periodic blood tests due to the warfarin. What is your explanation to Mrs. Smith.
The distance between the first and fifth minimum on a screen 60 cm behind the slits is 6.0 mm. What is the wavelength of the light used in this experiment.
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
An ocean liner leaves New York City and travels 21° north of east for 134km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
A certain particle has the life time of 10^-7 s, while measured at rest. How far does it go before decaying if its speed is 0.99 c when it is created.
The wheel of a car has a radius of 0.365 m. The engine of the car applies a torque of 284 N · m to this wheel, which does not slip against the road surface. Since the wheel does not slip, the road should be applying a force of static friction to t..
Two stationary positive point charges, charge 1 of magnitude 3.65 and charge 2 of magnitude 1.80 , are separated by a distance of 58. An electron is released from rest at the point midway between two charges, and it moves along the line connecting..
Determine the force of gravity between earth (mass =6.0x10^24kg) and the moon (mass= 7.4x10^22kg). The average earth-moon distance is 3.8x10^8m.
At time a grinding wheel has an angular velocity of 21.0. It has a constant angular acceleration of 26.0 until a circuit breaker trips at time = 1.6. From then on, the wheel turns through an angle of 435 as it coasts to a stop at constant angular dec..
How far below the release point is the center of mass of two stones at t = 550 ms? (Neither stone has yet reached the ground.)
A potter's wheel having a radius 0.47 m and a moment of inertia 10.9 kg•m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N. Find out the effe..
Two long parallel wires each with a mass per unit length of 25.10 g/m are supported in a horizontal plane by 2.5 cm long strings. Each wire carries the same current, I, causing the wires to repel each other so that the angle between supporting string..
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