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An 18 year old strucks a tennis ball that is departed from the racket horizontally with a speed of 28.0 m/s. Andy Roddick's strucks a tennis ball that is departed from the racket horiziontally with a speed of 209.3 km/hr. The tennis court is 78 feet long and 36 feet wide.
A. How long does it take your ball to reach the other side of the court?
B. How long does it take Andy Roddick's ball to reach the other side of the court?
A 50g marble moving at 2.2m/s strikes a 30g marble at rest. Assume the collision is perfectly elastic and the marbles collide head-on. A.What is the speed of the first marble immediately after the collision? B.What is the speed of the second marbl..
A distance away from a uniformly charged spherical object, the magnitude of the electric field is 575V/m and the electric potential is 3.50kV. What is the distance to the center of the object
What mass (in grams) of steam at 100°C must be mixed with 377 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 58.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, ..
The magnitude of q is chosen to make the potential difference between spheres 430 V, with the inner sphere at higher potential. Compute q.
A van de Graaff generator consists of a conducting sphere of radius 20 cm supported on a long insulating tube. What is the electric field at the surface of the sphere
The three displacement vectors in the drawing have magnitudes of A = 5.47 m, B = 5.43 m, and C = 3.91 m. Find the resultant ((a) magnitude and (b) directional angle) of the three vectors by means of the component method. Express the directional an..
If the pendulum makes a maximum angle of 5.4? with the vertical, what is the length of the pendulum
for an rlc circuit with a resistance of 13.0 k? a capacitance of 7.0 microf and an inductance of 35.0 h. what frequency
A parallel plate capacitor has square plates with sides of length 20 cm. The distance between the plates is 1 mm. What is the electric field between the plates
An object of mass 2.00 kg is held at a position A, a vertical height of 20.0 m above the ground. Point B is 8.00 m directly below A. Neglect air resistance and use g = 10.0 m/s.
small metal bead, labeled A, has a charge of 26 . It is touched to metal bead B, initially neutral, then that the two beads share the 26 charge, but not required equally. When the two beads are then placed 5.0 apart, force between them is 5.4×10-..
A ball starts at a point 30 m above the bottom of a dip with of 25 m/s. overlook friction, what will be the speed of the ball at the top of the next slope, which is 45 m above the bottom of the dip.
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