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A place kicker must kick a football from a point 36 m from the goal. As a result of the kick the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 24 m/s at an angle of 50o to the horizontal. The acceleration of gravity is 9.81 m/s2. Find its height with respect to the crossbar when it reaches the plane of the crossbar?
a 890kg electric car uses a 270v battery pack. as the car accelerates from rest 450c flows from the battery. whats the
A 2.0 kilogram cart is initially at rest on a level floor. Determine the kinetic energy of the cart after a constant horizontal 8.0 newton force is applied to the cart over a distance of 1.5 meters
Capacitors C1 = 6.10 µF and C2 = 2.95 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
Draw a velocity versus time graph for her journey and draw a position versus time graph for her journey.
A box of mass of mass 2 kg is placed on a spring such that when the box is released, the spring will push the box directly upward. what is the maximum height the box will reach
an electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.02 mt. if the
Box A weighs 80 N and rests on a table. A rope that connects boxes A and B drapes over a pulley so that box B hangs above the table
explain the rules for your state lottery such as 60 balls total with 5 balls picked each drawing. use combinations to
An semicircular arc with a radius of B is split into two. The arc is in the xy-plane such one part is in the first quadrant, What is the electric field vector at the origin
Neutrons released by a fission reaction must be slowed by collisions with the moderator nuclei before the neutrons can cause further fissions. Determine how many collisions are required to reduce the neutron's energy to at least 0.040 eV
A 3.6cm -diameter isolated metal sphere carries a net charge of 0.90uC. What is the potential at the sphere's surface
A spacecraft uses the sun's radiation for propulsion. The sun's radiation pressure is 1000 W/m2 and the exposedarea of the spacecraft is 500 m2. If the sunlightis completely absorbed, what is the force on the spacecraft?
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