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Suppose that you loft the ball with an initial speed of v = 17.7 m/s, at an angle of θ = 50.7° above the horizontal. At this instant your opponent is d = 11.1 m away from the ball.
An 8.0 m, 100 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.4, What is the minimum angle that the ladder can make with the
If the temperature is raised to 28 C, will the cube float higher or lower in the mercury? By what percent will the fraction of volume submerged change?
Sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temperature of 600 K. The sphere is surrounded by a concentric spherical shell, of which the inner surface has a radius of 0.9
A 1400 kg car rounds a curve of radius 70 m banked at an angle of 12°. If the car is traveling at 80 km/h, how much friction force will be required?
A rhinoceros is at the origin of coordinates at time t1 = 0. For the time interval from t1 = 0 to t2 = 22.0 s, the rhino's average velocity has x-component -4.5 m/s and y-component 4.5 m/s.
Two ants race across a table 61 cm long. one travels at 4.23 cm/s and the other at 3.99999 cm/s. when the first one crosses the finish line, how far behind is the second one?
A rectangular container measuring 25 × 39 × 63 is filled with water. What is the mass of this volume of water?
If the charge of the point charge in the figure were -2Q (instead of +Q), by what factor would the magnitude of the force on the point charge due to the dipole change?
An 8.0 gram bullet is fired into a 250 gram block that is initially at rest at the edge of a table of height 1.00 m. The bullet remains in the block, and after the impact the block lands 2.00 meter
A basketball player achieves a hangtime of 1.08s in dunking the ball. What vertical height will he attain? The acceleration of gravity is 9.8 m/s.
A Michelson interferometer is used to measure the wavelength of light emitted from a monochromatic source. As the adjustable mirror is slowly moved through a distance DA = 0.0265 mm, an observer co
Two small charged cork balls, each of mass 2.00 g, are supported on 1.00 m long lines of thread. The distance between the balls is 24.0 cm, and their charges are of the same magnitude. Determine th
For round numbers, we shall assume that all the weight of each hand is due to the calcium in the bones, and we shall treat the hands as point charges. One mole of {rm Ca} contains 40.18 {rm g}, and
A driver of a car enters a new 110-km/h speed zone on the highway. the driver begins to accelerate immediately and reaches 100km/h after driving 500m. if the original speed was 80km/h, what was the
Two friends, Al and Jo, have a combined mass of 164 kg. At the ice skating rink, they stand close together on skates, at rest and facing each other. Using their arms, they push on each other for 1 s
Through what total angle did the wheel turn between and the time it stopped? At what time does the wheel stop? What was the wheel's angular acceleration as it slowed down?
A 70 g metal block moving at 200 cm per second and it slide across the tabletop a distace of 83 c beofre it comes to rest. Assuming 75% of the heat goes in to the block, how much does the tem
Two loudspeakers are placed 3 meters apart. They emit 440 Hz sounds in phase. A microphone is placed 3.20 m distant from a point midway between the two speakers, and an intensity maximum is recorde
A baseball is thrown at an angle of 25° relative to the ground at a speed of 23.0 m/s. If the ball was caught 42.0 m from the thrower, how long was it in the air? How high did the ball travel be
A 747 airliner reaches its takeoff speed of 184 mi/h in 31.9 s. What is the magnitude of its average acceleration?
A gun shoots bullets that leave the muzzle with a speed of 205 m/s. If a bullet is to hit a target 151 m away at the level of the muzzle, the gun must be aimed at a point above the target. How far
Tarzan swings on a 30.0-m-long vine initially inclined at an angle of 370 with the vertical. What is his speed at the bottom of the swings if he starts from rest?
A particle has an acceleration of 6.24 m/s^2 for 0.280 s. At the end of this time the particle's velocity is 9.41 m/s. What was the particle's initial velocity?
A 0.40 kg object is swung in a circular path and in a vertical plane on a 0.5 m length string. If the angular velocity at the bottom is 8.0 rad/s, what is the tension in the string when the object