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Assume a soccer player kicks the ball from a distance 21.5 meter toward the goal. d = 21.5 meter.
Obtain what the initial speed of the ball if it just passes over the goal, 2.4 meter above the ground, given the initial direction to be 40 degree above the horizontal.
A car drives north for 1km. Then it turns and drives 2 km at 30 degrees south of west. Finally the driver turns again and drives 0.5 km northwest. What is the total distance driven
a woman of mass m stands at the edge of a solid cylindrical platform of mass m and radius r. at t 0 the platform is
A block on a 30 degree incline has an initial velocity of 3.5 m/s up the incline. How long until it returns to where it started from
River Pascal with a volume flow rate of 7.0×10^5 L/s joins with River Archimedes, which carries 1.07×10^6 L/s, to form the Bernoulli River. What is the speed of the water in the Bernoulli River
Estimate the time constant in a RC circuit.
A student applies a 1.5 N horizontal force on a box of weight 20 N at rest on the floor. The coefficient of static pressure is 0.3. (a) Calculate the magnitude of the normal force acting on the box and (b) the magnitude of the static friction..
one electron collides elastically with a second electron initially at rest. after the collision the radii of their
The thrust produced by a single jet engine creates a force of F = 63000 N. It takes the jet (with a mass of m = 9300 kg) a distance of d = 0.75 km to take off. What is the take-off speed of the jet vt in m/s
A turntable rotates with a constant 2.00 rad/s2 angular acceleration. After 4.80 s it has rotated through an angle of 54.0 rad. What was the angular velocity of the wheel
An electric field of 39000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -8.9C at this spot?
A small object with a mass of 250mg carries a charge of 40.0 nC and issuspended by a thread between the vertical plates of aparallel-plate capacitor. what is the potential difference between the plates
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 90.0 km/h, 5.0 min at 90.0 km/h, Determine the average speed for the trip
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