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You throw a ball towards a wall at speed 20 m/s and at an angle 40o above the horizontal. The wall is 22.0 meter from the release point. Compute how long does the ball take to reach the wall in seconds? Compute how far above the release point does the ball hit the wall in meters? Find the vertical and horizontal components of its velocity as it hits the wall in m/s? When it hits, has the highest point on its trajectory?
A moving particle encounters an external electric field that decreases its kinetic energy from 9520 eV to 7060 eV as the particle moves from postition A to position B. The electric potential at A is -55.0V, and the electric potential at B is +27.0 V...
A horizontal spring, with spring constant k, has a mass, m,attached to it and is vibrating horizontally on a friction less surface. Which one of the following statements is CORRECT?
What is the phase constant of the motion and what are its position and direction of travel at t = 2.00 s, what is the first time when the object is at maximum velocity?
The moon's diameter is 3.48 × 106 m, and its mean distance from the earth is 3.85 × 108 m. Find the diameter of the moon's image on the slide film
careful measurements of local variations in the acceleration due to gravity can reveal the locations of oil deposits.
How to compute for the density of dark matter estimate mass density of dark matter in the solar neighbourhood. Express the answer in units of kg m-3, Msun pc-3, Msun AU-3.
The balance wheel of a watch oscillates with an angular amplitude of ? rad and a period of 0.830 s. Find the maximum angular speed of the wheel
According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Imagine the speed quoted is that of the end of the rod.
An ultralight plane and pilot have a total mass of 194 kg. While executing a banked curve of radius 23 m at a speed of 12 m/s, what is the net force acting on the plane and pilot
Suppose one gallon of gasoline produces 1.1 x10^8 J of energy, and this energy is enough to operate a car for 18 miles. An aspirin tablet has a mass of 275 mg. If the aspirin could be converted completely into thermal energy, how many miles would ..
A 1245-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1955-N crate hangs from the far end of the beam.
The two metal objects in Fig. 25-25 have net charges of +70pC and-70pC, which result in a 20V potential difference between them.(a)What is the capacitance of the system? (b) If the charges arechanged to +200pC and -200pC, what does the capacitance..
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