A hockey player accelerations punk (m=0.237 kg) from rest to a velocity of 45 m/s in 0.173 sec. Determine the acceleration of the puck and the force applied by the hockey stick to the puck. neglect resistance forces.
Why do induced currents oppose the change in magnetic flux that causes them? what conservation law of physics would be broken if the induced current flowed in the opposite direction?.
semi truck is traveling down the road at 65 mph (29 m/s) going north. a strong gust of wind blows diagonally into the truck with 25 mph (11 m/s). the operator's manual of the truck says that the vehicle will topple off the road if experiencing any wind velocity over 22 mph (10 m/s) against the side of the truck. simple question: is the truck going to topple over?
a rod 27 cm long moves in a plane perpendicular to a magnetic field of 0.051 t. the velocity of the rod is perpendicular to its length. find the speed of the rod if the potential difference between the ends is 2.1 v.
24) a closed loop conductor that forms a circle with a radius of is located in a uniform but changing magnetic field. if the maximum emf induced in the loop is what is the maximum rate at which the magnetic field strength is changing if the magnetic field is oriented perpendicular to the plane in which the loop lies? a) 0.40 t/s b) 2.5 t/s c) 0.080 t/s d) 5.0 t/s
a fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. it takes 3.5 ss for the boat to travel from its highest point to its lowest, a total distance of 0.66 mm. the fisherman sees that the wave crests are spaced 6.8 mm apart. part a how fast are the waves traveling? express your answer in meters per second.
if a boat and its riders have a mass of 800 kg and the boat drifts in at 1.4 m/s how much work does sam do to stop it?
a rectangular coil with turns that has a resistance of is coplanar with a long wire which carries a current which depends on time according to , where and . the rectangular loop has a width of and length . the near side of the loop is a distance from the wire. what is the total energy dissipated in the entire coil from to ?
what is the minimum work done by the heart to pump 490 g of blood from a person's foot to his heart 1.5 m away? use g
if a light source is moving towards you, its light is shifted to longer wavelengths (i.e. is redshifted). true or false
(a) while the block is in contact with the spring and being brought to rest, how much work is done by the spring force?
7) a solenoid having n turns and carrying a current of 2.000 a has a length of 34.00 cm. if the magnitude of the magnetic field generated at the center of the solenoid is 9.000 mt, what is the value of n? a) 860.0 b) 1591 c) 2318 d) 3183 e) 1218
when you stand in front of a convex mirror, the image you see is a. real and upright. b. real and inverted. c. virtual and inverted. d. real and inverted if your distance from the mirror is greater than two focal lengths. e. virtual and upright.
