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The slope of a line connecting two points on a velocity versus time graph gives A) instantaneous velocity. B) average velocity. C) instantaneous acceleration. D) average acceleration. I know that its acceleration.. so C or D. Dont know the difference between the two.
A 0.42 kg ball is dropped from rest at a point 1.30m above the floor. The ball rebounds straight upward to a height of 0.580 m. What are the magnitude and direction of impulse of the net force applied to the ball during the collision with the floo..
A charge particle of mass .0020kg is subjected to a 6 T magnetic field which is acts as a right angle to its motion. if the particle moves in a circle of radius .20m at a velocity of 5.0 m/s. what is the magntiude of the charge on the particle.
consider a metal rod, length = .30m, cross sectional area=0.0010m^2, temperature difference between the ends is 65*C. What is the thermal conductivity of the metal
A disk with a radius of 1.5 m whose moment of inertia is 34 kg · m2 is caused to rotate by a force of 160 N tangent to the circumference
The magnetic field inside a 5cm diameter solenoid is 2.0T and decreasing at 4.0 T/s. What is the electric field strength inside the solenoid
A 72.4 man steps off a platform 3.02 above the ground. He keeps his legs straight as he falls, What is the magnitude of the reaction force to the force
A 300 hp car engine can deliver that maximum power at 6000 rpm. What is the engine's torque at that speed
A truck weighs four times as much as a car. if the truck coasts into the car at 12km/h and they stick together, what is their fimal velocity.
Two charged objects experience a mutual repulsive force of 0.86N. If the charge of one of the objects is reduced by half and the distance separating the objects istripled, what is the new force? (Enter the magnitude of the force.)
a 900kg car is initially moving with a speed of 30 m/s when it applies its ABS brakes to come to a stop. determine the time and distance needed for the car to come to a complete stop
Block B in the figure below weighs 730 N. The coefficient of static friction between block and table is 0.24. Find the maximum weight of block A for which the system will be stationary
A cylindrical eraser of negligible mass is dragged across a paper at a constant velocity to the right by its pencil. The coefficient of kinetic friction between eraser and paper is 0.650. The pencil pushes down with 3.70 .
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