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One heater uses 270 W of power when connected by itself to abattery. Another heater uses 350 W of power when connected byitself to the same battery. How much total power do the heaters use when they are both connected in series across the battery?
A 5.00 kg box is pulled by a rope with a force of 25.0 N. Determine the acceleration of the boxes
Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, nearby sphere. Both spheres can be treated as particles. For what value of q/Q will the electrostatic force between the two spheres be maximized?
explain how a driver can steer a car traveling at constant speed so that a the acceleration is zero or b the magnitude
A 25.0g bullet moving at 900 m/s is fired through a 0.900 kg block of wood emerging at a speed of 100 m/s. what is the resulting speed
A 117Kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1820N. When it has reached an altitude of 120m how hard does the floor push on the power supply
A 2.20-uF capacitor is connected across an ac source whose voltage amplitude is kept constant at 60.0V but whose frequency can be varied, Find the current amplitude when the angular frequency is 100 rad/s
According to the definition of work, the work done by an external force in moving a heavy crate along a horizontal surface should be the same whether the force is pulling upward at a 45 degree angle or pushing downward at a 45 degree angle. In practi..
A bullet with mass 12.5 g and speed 94.9 m/s is fired into a wooden block with a mass of 113 g which is initially at rest on a horizontal surface. What is the speed of the block-bullet system immediately after collision
The ground-state wavefuntion of a hydrogen atom is Y=(1/((pi)a^3))^(1/2)*e^(-r/a) where a=bohr radius. a) calculate probability that the electron will be found within a small sphere of radius 1pm on the nucleus. b) no what if the sphere is at r=a. Wh..
Find out the average speed for the trip
The kinetic friction force between a 60.0-kg object and ahorizontal surface is 50.0 N. what distance will it slide before coming to a stop
A 0.267 T magnetic ?eld in a mass spectrometer causes an isotope of sodium to move in a circular path with a radius of 0.068 m. what is the isotope's mass
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