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The soapy path leading up to the base of the ramp is 3.00 meters long. The workers push the box from the rest to obtain the required speed. They push with a constant horizontal force along the entire 3.00 meters. Assume that there is no fiction along the horizontal runaway. What is the power output of the worker as she pushes the box along the 3.00 meters? Hint: Start by using kinematics to calculate how long it will take the worker to push the box over the 3.00 m distance.
The speed of the box was 6.54 m/s in order to just make it up the ramp and into the truck
The ball leaves the bat 2.0 ms later with a vertical velocity of magnitude 10 m/s. Illustrate what is the magnitude of the average force of the bat on the ball during the ball-bat contact?
You throw a ball from the balcony onto the court in the basketball arena. You release the ball at a height of 6 m above the court, with an initial velocity equal to 9 m/s at 33° above the horizontal.
Two sinusoidal waves, each of wavelength 5 m and amplitude 10 cm, how many nodes appear in the resulting standing wave
The figure shows three blocks attached by cords that loop over frictionless pulleys. Block B lies on a frictionless table; what is the tension in the cord at the right
A mosquito collides head on with a car traveling 60 mph. How do you think the size of the force the car exerts on the mosquito compares to the size of the force that the mosquito exerts on the car.
A bolt comes loose from the bottom of an elevator thatis moving upward at a speed of 5.42 m/s. The boltreaches the bottom of the elevator shaft in 2.90 s. Howhigh up (in m) was the elevator when the bolt came loose?
The resistivity of silver is 1.59 x 10-8 Ω•m. The length of a silver wire is 35 meter and the radius is 5.80 x 10-4 meter. Evaluate the resistance of the wire
The magnet rotates at angular frequency w. Write an expression for the flux through a single loop as a function of time in terms of magnet area, coil area, and field strength. (It should include a sine function.)
A 21 kg suitcase is being pulled with constant speed by a handle that is an angle of 25 degrees above the horizontal. If the normal force exerted on the suitcase is 170 N, what is the force F applied to the handle?
Two equal and opposite charges of magnitude 2.00µC and -2.00µC are held .15 m apart. What force (magnitude & direction) would act on an electron placed at the midway point
A circuit in a small appliance operates on a current of 1.5 mA. How many electrons enter and leave this part of the appliance in 5.0 s
Paper has a dielectric constant of K=3.7. Suppose that a typical sheet of paper has a thickness of .030 mm. Calculate the capacitance of this home-made capacitor
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