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You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 26.0N . You carefully add 1.40×10^4 J of heat energy to the sample and find that its temperature rises 19.0 C. What is the sample's specific heat?
A square plate of copper with 55.0 cm sides has no net charge and is placed in a region of uniform electric field of 83.0 kN/C directed perpendicularly to the plate. Find the charge density of each face of the plate
A biology student rides her bike around a corner of radius 25 meter at a steady speed of 8.2 m/sec. If she is not skidding, what is the magnitude of the force of friction on her bike from the road
A circular loop of wire is oriented so that its normal is perpendicular to the earth's horizontal magnetic field (B = 2.87 x 10^-5 T). Calculate the radius of the loop
Consider a hammer with a 1.2-kg head. Let it strike the head of a 12-g iron-alloy nail 16 times in a row, quickly. estimate the temperature rise (in degrees Celsius) of the iron nail
At t = 5.0 seconds, the cheetah is standing still, having knocked over the gazelle. Illustrate what is the average acceleration of the cheetah from t = 0 to t = 5.0 seconds?
Describe the three main layers of the Sun's interior and what do astronomers mean by a "model of the Sun" - Briefly describe how you would determine the absolute magnitude of a nearby star.
A 10.0-m long string is moved up and down with simple harmonic motion with a frequency of 33 Hz. Determine the velocity of the wave on the sting
A man sits on the south bank of a 100m wide river that flows due east at 2m/s. The man can swim 3m/s, How long will it take him to cross
Consider a square window of side L=1.00m that lies in the plane of the blackboard at the front of the classroom. calculate the electric flux through the window
A crate pushed along the floor with velocity slides a distance after the pushing force is removed. what distance does the crate slide before stopping
A base ball has mass 0.145 kg. If the ball remains in contact with the bat for 2.00 ms, find the magnitude of the average foce applied by the bat
400 gram block, attached to the end of an ideal spring (horizontal)with force constant k=10 K/m, Compute angular frequency of the oscillations
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