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a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find
(a) the max height of the projectile
(b) the time to rise to the top of the trajectory
(c) the total time the projectile is in the air
(d) the velocity of the projectile at the ground
(e) the range of the projectile.
You hold a ruler that has a charge on its tip 2 cm above a small piece of tissue paper to see if it can be picked up, What is the minimum charge required to pick up the tissue paper
A blood transfusion is being set up in an emergency room for an accident victim. What is the distance h above the victim's arm where the level of the blood in the transfusion bottle should be located
The helicopter view in the figure below shows two people pulling on a stubborn mule. What is the single equivalent force magnitude and direction
A pilot having mass M(kg) flies a plane in a vertical loop with a radius of 800m at a constant speed of 500 km/h. Determine the force exerted on the pilot by the seat at both the top and bottom of the loop
Once a traffic light turns green, a car speeds up from rest to 50 mi/h with constant acceleration 9 mi/h • s. In the adjoining bike lane, a cyclist speeds up from rest to 20mi/h with constant acceleration 13mi/h.
In a crystal an electron is confined to a cubical region of length 0.5nm on a side. estimate the minimum allowed KE of the electron
find the electric flux through the bottom of the car. What was the jogger's average speed in m/s.
Two shoppers walk from the door of mall to their car, that is 250m down a lane of cars and then turn 90 degrees to the right and walk an additional 60m what is the magnitude of the displacement of the shopper's car from mall door.
A block of mass 1.60 kg is connected to a spring of spring constant 149 N/m which is then set into oscillation on a surface with a small coefficient of kinetic friction. find the total energy was lost in the first full oscillation
A 7.3 x10^3 kg space vehicle and its empty 6.8 x 10^2 kg booster unit are moving together through space at 370 m s. An explosion lasting 2.2s is used to separate the two parts.
You throw a ball straight up in the air. The instant after leaving your hand, the balls speed is 30 meters per second. Ignoring the effects of air resistance, predict how fast the ball will be traveling 2 seconds later.
A female gymnast weighs 620 N. If she is hanging stationary from a high bar, how many forces are acting on her.
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