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A crate is dragged 4.0m along a rough floor with a constant velocity by a worker applying a force of 450N to a rope at an angle of 30? to the horizontal.
PART A: How many forces are acting on the crate?
PART B: How much work does each of these forces do?
PART C: What is the total work done on the crate?
Sound with a frequency of 466 Hz travels through steel. What is the speed of the sound in steel?
An airplane with a speed of 73.2 m/s is climbing upward at an angle of 40° counterclockwise from the positive x axis. Calculate the distance along the ground
A bowling ball is rolled off a flat top building w/ an initial speed of 5.8m/s. It lands 24.2 meters from base of the building. how tall is the building
Coefficient of linear expansion for aluminium
A 1.35 kg object is moving in the x direction at 16.4 m/s. Just 3.61 s later, it is moving at 28.8 m/s at 36.0^circ to the x axis. What is the magnitude of force applied throughout this time.
A 0.200 kg hammer is moving horizontally at 8.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. Calculate the duration of the impact
A copper vat is 10-m long at room temperature (20°C). How much longer is it as it contains boiling water at 1 atm pressure.
A car is driven east for a distance of 49 km, then north for 23 km, and then in a direction 28° east of north for 28 km. FIND the magnitude (in km) of the car's total displacement from its starting point
the moon has an angular size of .5degrees when viewed with unaided vision from earth. what is the angular size of the moon as seen through this telescope
A bar magnet is oriented with its magnetic dipole moment at 39.5° to the direction of a 0.0689-T magnetic field, causing a torque of 0.00351 N·m to act on it
A 5.00*10^-4 C charged mass (1.00g) is thrown upwards at a speed of 20.0 m/s and it is observed that it has gone up a distance of 15m it is moving at only 10.0 m/s, what is the electric potential at 15 m up
Gas is confined in a tank at a pressure of 11.9 atm and a temperature of 23.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 76.0°C
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