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1. A soccer ball is kicked with an initial speed of 9.8 m/s. After 0.200 s it is at its highest point. What was its initial direction of motion?
° (above the horizon)
The gravitational force between two masses M and m separated by a distance r is 40 N. What is the new force when this distance is halved?
77 N to push a box with an acceleration of 0.55 m/s2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.72 m/s2. What is the mass of the box
A physics student standing on level ground finds that an imaginary line drawn from his eye to the top of a tree, If his eyes are 5.8 feet above ground, what is the height of the tree
What will be the total horizontal distance traveled by the ball? What is the velocity of the ball (magnitude and direction) the instant before it hits the ground? That is what is its i-component? What is its j-component?
Five people are playing tug-of-war. Anders and alyson pull to the right with 44 N and 34 N, correspondingly. Calid and Marisol pull to the left with 55 N and 35 N, respectively. With what force and in what direction does Benito pul of the game is tie..
How much work has he done? (b) Another player, wearing clothes that offer better protection against heat loss, is able to remain in the game long enough to do 2.1 × 105 J of work. What is the magnitude of the heat that he has lost?
A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8mm, A cylindrical capacitor has an inner conductor with a radius of 1.6mm and an outer conductor with a radius of 3.8m
An isolated conductor of arbitrary shape has a net charge of +9.0 10-6 C. Inside the conductor is a cavity within which is a point charge q = +3.4 10-6 C. What is the charge on the cavity wall
The position of a particle moving along the x axis is given by x = (32 + 40t - 8.0t2) m, where t is in s. What is the average velocity during the time interval t = 1.0 s to 3.0 s?
If the radius of a hose is 1cm, the pressure is 300kpa, and velocity is 1.8m/s, what is the radius of the nozzel
Two rockets having the same acceleration start from rest, but rocket A travels for twice as much time as rocket B, If rocket A reaches a speed of 390m/s , what speed will rocket B reach
Black oil reservoirs at 250 deg F+, can there be oil cooking going on releasing some of the light and or intermediats that result in some disequilibreum under reservoir conditions (Pb vs depth could be as high as 70 psi/ft)
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