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A hunter aims directly at a target (on the same level) 100 m away.
(a) If the bullet leaves the gun at a speed of 280 m/s, by how much will it miss the target? m
(b) At what angle should the gun be aimed so as to hit the target?
A converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place.
Illustrate w hat angular speed (in revolutions per minute) is needed for a centrifuge to produce an acceleration of 720 times the gravitational acceleration 9.8 m/s2 at a radius of 9.95 cm ?
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
A small spherical insulator of mass 8 x 10 kg and change +0.600 micro Coulomb is hung by a tin wire of negligible mass. A charge of -0.900 micro Coulomb is held 0.150 m away the sphere and straight to the right of it, so the wire makes the angle with..
A bicycle has wheels with a diameter of 0.67m. It accelerates uniformly and the rate of rotation of its wheels increases from 191 rpm to 260 rpm in a time of 21.70 s. Find the linear acceleration of the bicycle.
Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 is 3.7 kg and m2 is 9.0 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor.
Explain how many pellets must be added to 450 g of water that is initially at 20.0°C to make the equilibrium temperature 25.0°C? Neglect any energy transfer to or from the container.
An ocean liner leaves New York City and travels 12.0° north of east for 111 km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the directions.
A spacecraft is traveling with a velocity of vox = 5675 m/salong the +x direction. Two engines are turned on for a time of 847 s. One engine gives the spacecraft an acceleration in the +x direction of ax = 1.25 m/s2,while the other gives it an acc..
An automobile tire is rated to last for 40,000 miles. To an order of magnitude, through how many revolutions will it turn?
An alpha particle and beta^ {-} particle, each with kinetic energy 35 {rm keV}, are sent through a 1.10 {rm T} magnetic field. The particles move perpendicular to the field. Find the curvature radius for alpha particle's trajectory. Hint: The kine..
What mass of water (at 4.0 C) can be contained in a rectangular box whose dimensions are 10 cm by 5.00 cm by 1.00 cm? The density of water at 4C is 1.000 X 10 kg/m-cubed.
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