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If the police car's acceleration is 1.80 , and 7.60 elapses after the police car is passed until it overtakes the speeder (assumed moving at constant speed), what was the speeder's speed?
A 9.60 kg mass suspended from a spring with spring constant, k =750 N/m, extends it to a total length of 0.510 m. Find the new total length of the spring when a 13.40 kg mass is suspended.
An electron librated from a hot filament cathode is attracted by an anode with a potential of 1200V positive with respect to the filament. calculate the speed of the electron when it strikes the an
Starting from rest, how long would a train take to roll freely along its track from San Francisco to Washington D.C which are separated by an arclength of s =3900 km and are connected by a straight
A 27 pound meteorite struck a car, leaving a dent 27 cm deep in the trunk. If the meteorite struck the car with a speed of 620 m/s, what was the magnitude of its deceleration, assuming it to be con
Downward at an angle of 53° below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?
A 18.8 kg block is dragged over a rough, hor- izontal surface by a constant force of 77.6 N acting at an angle of 35? above the horizon- tal. The block is displaced 10.8 m, and the coefficient of k
The friction between the block and the floor depends on velocity? Ffr(v) = mg(alpha+betav) where alpha,beta areconstants.
A laboratory projectile launcher ("spring cannon") is set at 0 degrees elevation and secures at a height of 1.25 meters above the floor.
We want both blocks to slide together across the table without slipping on each other. What is the largest acceleration that the system can be given in terms of μs and g?
A lightbulb emits a spherical wave. If the intensity of the emitted light is 1.2 W/m2 at a distance of 2.4 m from the bulb, what is the intensity at a distance of 4.9 m?
Firefighters responded to a call to rescue a small kitten stranded on the top superstructure of a bridge. Just as a rescuer was about to make the lifesaving "grab", the kitten panicked and jumped, f
A 55 kg swimmer is standing on a stationary 175 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +3.7 m/s relative to the shore. Find the recoil velocity that th
A 1MeV neutron is scattered through an angle of (45)^0in a collision with a 2H nucleus. (i) What is the energy of the scattered neutron? (ii) What is the energy of the recoiling nucleus?
The stopper is removed. What mass of water flows from the nozzle in 2.00 h? (c) Calculate the gauge pressure of the flowing water in the hose just behind the nozzle.
During this time interval, the magnitude and direction of the velocity of the particle undergo a negligible change, but the particle moves by a distance of 0.150 m in a direction perpendicular to th
A gyroscope contains a cylinder of mass 4kg, radius 1.6cm and length 7.7cm, which is free to rotate about its axis. Calculate the moment of inertia of the cylinder for rotations about its axis
In 550-600 words, outline the different methods that astronomers use to calculate the distances to astronomical objects, from the closest to the farthest.
Now a triply charged ion of mass m' is accelerated through the same potential difference and deflected by the same magnetic field into a semicircle of radius R' = 5R. What is the ratio of the masses
The sled is loaded with physics books, giving a total mass of 39. With what force should you pull with the rope horizontal?
Two groups of canoeists meet in the middle of a lake. After a brief visit, a person in canoe 1 pushes on canoe 2 to separate the canoes. Suppose the speeds of the two canoes after they are pushed a
If m = 5.41 g, Q = -7.63 µC, and θ = 23.9°, determine the magnitude and the direction of the electric field that enables the block to remain at rest on the incline.
An infinite cylindrical conductor of radius a = 1 cm carries a current I1 = 0.39 A out of the page. A coaxial, infinite, thin cylindrical conducting shell of radius b = 5 cm carries a current I2 =
The coefficient of static friction between the floor and the ladder is μs= 0.45. How far along the ladder can a 60.0 kg person climb before the ladder start to slip?