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A cube of ice is taken from the freezer at -9.5°C and placed in a 105 g aluminum calorimeter filled with 323 g of water at room temperature of 20°C. The final situation is observed to be all water at 18°C. What was the mass of the ice cube?
__________g
An astronaut weighs 7*10^2 N on the surface of the earth (M earth=5.98*10^24 kg). What is her weight 7.70*10^6 m above the earth.
A uniform 5.50kg square solid wooden gate 2.00mon each side hangs vertically from a frictionless pivot at the center of its upper edge. What is the angular speed of the gate just after it is struck by the unfortunate raven
Adisa pulls a 40-N crate up a 5.0-m long inclined plane at a constant velocity. If the plane is inclined at an angle of 37° to the horizontal and there is a constant force of friction of 10 N between the crate and the surface, what is the net change ..
A person working on the transmission of a car accidentally drops a bolt into a tray of oil. The oil is 4.86 cm deep. What is the index of refraction of the oil
An airplane, flying horizontally at an altitude of 1.83 km at a speed of 346 m/s, releases a package. find the speed of the package just before it reaches the ground
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C), What value of absolute zero does the calibration yield
Determine the change in gravitational potential energy of a 70-kg skier-Earth system when the skier goes down this slope.
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.11 m2 and whose thickness is 8 mm. Treat the wall as a slab of the insulating material Styrofoam whose area and thickness are 15 m2 and 0.10 ..
2.5 kg of water undergoes an isothermal, reversible process beginning at 100°C, saturated liquid and ending at 1.0 MPa. Find the change in specific entropy of the water
A penny of mass 3.1g rests on a small 20g block supported by a spinning disk. The coefficients of friction between the block and disk are 0.75 (static) and 0.64 (kinetic).
Assuming that the ram spring is oriented vertically and is still compressed by 1.17 10-2 m when the downward-moving ram hits the staple, find the speed of the ram at the instant of contact
an icy planet at some mass M and radius R is spinning at some velocity W the ice melts into space at the constant rate of K (masses/sec), at what rate is the velocity changing
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