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A vector A has a magnitude of 52.6 m and points in a direction 19.4° below the positive x axis. A second vector, B, has a magnitude of 70.2 m and points in a direction 50.2° above the positive x axis. If vector C = A + B, calculate the magnitude of the vector C. what is the direction of vector C?
A steel rod is 3 cm in diameter at 25 C. A brass ring has an interior diameter of 2.992 cm at 25 C. At what common temperture will the ring just slide into the rod?
When a "dry-cell" flashlight battery with an internal resistance of 0.37 ? is connected to a 1.56-? light bulb, Find the ratio Pwet/Pdry of the power delivered to the bulb by the wet-cell battery to the power delivered by the dry-cell battery
A fire hose 10 cm in diameter delivers water at the rate of 21kg/s . The hose terminates in a nozzle 2.6cm in diameter. What is the flow speed in the nozzle
A pipe with a 2m diameter carries water having a velocity of 4 m/s. What is the mass flow rate of the water in kg/s at the following temperatures.
A 525-ohm resistor and a 295-mH inductor are connected in series with an ac generator with an rms voltage of 20.0V
An elevator is moving up at a constant velocity of 2.5 m/s Calculate the force the floor exerts on the passenger, Calculate the force the floor exerts on the passenger
A boy is attempting to swim directly across a river; he is able to swim at a speed of 0.421 m/s relative to the water. The river is 2.48 m wide and the boy ends up at 4.77 m downstream from his starting point.
A 130 kg crate is pushed at constant speed up the frictionless 28° ramp. What force is exerted by the ramp on the crate
Suppose a proton and an alpha particle each have kinetic energy 8.6MeV. Find speed of the alpha particle
An object's moment of inertia is 1.8kgm2 . Its angular velocity is increasing at the rate of 3.3rad/s2, What is the torque on the object
A plane, diving with constant speed at an angle of 49 ° with the vertical, releases a projectile at an altitude of 570 m. The projectile hits the ground 7.0 s after release.
Using the equation F=m v^2/r for a force an object in circular motion. Find the radius r of motion of a m=1.6 kg ball travelling in a circular path acted upon by a centripetal force F=7N.
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