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A block of ice at 0 degrees C has a small depression in the top. We place a steel nut of mass 45 grams in this depression. The initial temperature of the nut is 95 degrees C. When equilibrium is reached, the nut is sitting in a small pool of water from the melted ice. How much water is there? Assume no heat enters or leaves the system.
A certain musical instrument is a tube with one end open and the other end closed. The second-lowest frequency that it can play is 1500 Hz. What is the fundamental frequency
A commuter backs her car out of her garage with a constant acceleration of 1.60 m/s2. If she then brakes to a stop in 0.8 s, what is her (constant) deceleration
A -10uC charge is 3cm away from a +10uC charge. and is 4cm to the left from a +64uC charge. Find the net force on the +10uC charge
using reliable sources write a summary of the concept of energy return on energy invested eroei. provide some
A vertical square plate (10' x 10') is used to dam a channel. determine the total resultant force on the plate and the location
The position of an object connected to a spring varies with time according to the expression x = (5.4 cm) sin(9.3?t). Find the frequency of the motion
The electric potential at a position located a distance of 18.6 mm from a positive point charge of 7.50×10-9C and 14.8 mm from a second point charge is 1.10 kV
A man throws a 0.200kg rock off the top of a 50.0m cliff at an angle of 40.0 degrees above the horizontal. What is the kinetic energy of the rock
How long did it take the apple to hit Newton after falling off? Draw a graph of velocity vs
Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal, Calculate the ratio qB/qA of the charges
The length of a string is 322 cm. It is held fixed at each end. The string vibrates in seven sections; such as the string has seven antinodes, and the string vibrates at 160 Hz.
question1two dogs pull horizontally on ropes attached to a post angle problem 1 between the ropes is 60.0 degrees. if
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