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A 3.3 MeV neutron undergoes an elastic scattering event with a proton. The emerging scattered proton is seen to have a displacement of 120° from the trajectory of the incoming neutron. What is
A person is standing on the shore watching the boat travel. What is the boats velocity relative to the person on the shore?
A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire?
A 13.0 kg mass is traveling to the right with a speed of 2.20 m/s on a smooth horizontal surface when it collides with and sticks to a second 13.0 kg mass that is initially at rest but is attached
The 100 kg block takes 5.9 s to reach the floor after being released from rest. What is the mass of the block on the left?
Calculate the centripetal acceleration of the car and the centripetal force on the car. Remember that 1 mph = 0.447 m/s.
A neutron star is the remnant left after certain supernovae (explosions of giant stars). Typically, neutron stars are about 16.0 km in diameter and have around the same mass as our sun. What is a t
When a circular plate of metal is heated in an oven, its radius increases at the rate of 0.01 cm/sec. At what rate is the plate's area increasing when the radius is 50 cm? (Give your answer correct
Find the moment of inertia of the wheel if the block rises to a height of = 7.2 before momentarily coming to rest.
Which scale measures the amount of damage after an earthquake?
A flight attendant pulls her 72 N flight bag a distance of 265 m along a level airport floor at a constant velocity. The force she exerts is 44 N at an angle of 57° above the horizontal.
The positive charges are arranged in a square. sides- .10 m the top right is 9 nC the bottom right is 3 nC and the bottom left is 1 nC. find the magnitude of the electric field at the fourth corner
A speedboat starts from rest and accelerates at +2.32 m/s2 for 6.78 s. At the end of this time, the boat continues for an additional 5.34 s with an acceleration of +0.677 m/s2. Following this, the
The sign has a weight of 206.0 N and the beam's weight is 50.0 N. The beam's length is 1.50 m and the sign's dimensions are 1.00 m horizontally x 0.80 m vertically. A. what is the minimum angle that
Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's total displacement measured from its starting direction.
A student of weight 673 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from the seat is 566 N.
The threshold of dark-adapted (scotopic) vision is 4.0 10-11 W/m2 at a central wavelength of 500 nm. If light with this intensity and wavelength enters the eye when the pupil is open to its maximum
Determine the stopping distances for a car with an initial speed of 96 and human reaction time of 0.80 , for an acceleration of -3.8m/s^2.
Two capacitors (A,B), capacitor (A) is charrged throuh a potential difference (50volt) and capacitor (B) has a capacitance of (30mf) and is charged through a potential difference (20volt). After di
A fire hose held near the ground shoots water at a speed of 6.2 m/s.At what angle(s) should the nozzle point in order that the water would land 2.5 m away?
If her downward motion is stopped 1.70 s after she enters the water, what average force did the water exert on her?
What is the magnitude of the apparent weight of a 84 kg astronaut 4800 km from the center of the Earth's Moon in a space vehicle moving at constant velocity?
Two horizontal forces, 205 N and 155 N, are exerted on a canoe. If the these forces are applied in the same directions, find the net horizontal force on the crate.
A stereo speaker represented by P in the figure below emits sound waves with a power output of 111 W. What is the intensity of the sound waves at point x when r = 12.0 m?
but then construction work forces you to slow to 43.0 km/h for 44.0 km. What would be the least speed (in km/h) needed for the rest of the trip to arrive in time for the interview?