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You are standing on a 50m cliff and throw a ball upwards at 8.2m/s
- calculate the maximum height the ball will reach
- calculate the time it will take the ball to return where it started
- calculate the speed of the ball when it hits the ground.
A homeowner is trying to move a stubborn rock from his yard which has a mass of 1.150 × 103 kg. what is the minimum total length of board required to move the rock
The intake in the figure has cross-sectional area of 0.72 m2 and water flow at 0.49 m/s. What is the pressure difference between inlet and outlet
an electron starts from rest 2.84 cm from the center of a uniformly charged sphere of radius 2.19 cm. if the sphere
A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. If he were to walk the tight-rope with just a pole, what difference would it make to his balance
At the start of a trip, a driver adjusts the absolute pressure in her tires to be 2.51 x 105 Pa when the outdoor temperature is 277 K. find the air temperature in Kelvin inside the tires at the end of the trip
Two boxes of masses, m and 2m, are in contact with each other on a frictionless surface. What is the acceleration of the more massive box
Find the focal length of a concave mirror if an object 12cm from the mirror has a virtual image 2.1 times the object's actual size
An 11.2-g piece of Styrofoam carries a net charge of -0.68 µC, What is the charge per unit area on the plastic sheet
An object acted on by 3 forces moves with constant velocity. Evaluate the magnitude and direction of the third force acting on the object
Assume 1400 J of heat are added to6.3 mol of argon gas at a constant pressure of 120 kPa. (Assume that the argon can be treated as an ideal monatomic gas.) Find the change in internal energy. Discover the change in temperature for this gas.
question the resonant frequency of a certain series rlc circuit is 3.88 khz and the value of its capacitance is 7.00
A 28.0 g object moving to the right at 18.0 cm/s overtakes and collides elastically with a 9.0 g object moving in the same direction at 15.0 cm/s. Find the velocity of each object after the collision
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