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What would have been the angular displacement of the engine if its angular velocity had remained constant at the initial value of +190 rad/s during the entire 13.0-s interval?
Find the current in the coil if the maximum torque exerted on it by the magnetic field is 0.18 N · m.
A 194-kg satellite is in circular orbit around the Earth and moving at a speed of 5.14 km/s. How much work must be done to move the satellite into another circular orbit that is twice as high above
A fire helicopter carries a 660-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, the cable makes an angle of 38.0° with respect to t
After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of release does it rise? (Round your answer to two decimal places.)
Determine the energy of the incident electron. (Use any variable or symbol stated above along with the following as necessary: me for the mass of elecron and e for the electron's charge.)
What is the magnitude of the impulse that the bat delivers to the ball? What is the direction of the impulse that the bat delivers to the ball?
first find the moment of inertia of the bar about an axis perpendicular to the plane and passing through the center of mass of the bar.
Suppose the coefficient of static friction between the road and the tires on a car is 0.844 and the car has no negative lift. What speed will put the car on the verge of sliding as it rounds a leve
Determine the magnitude of his tangential acceleration at the same instant.
A spinning wheel is initially spinning clockwise at a rate of 10 rad/s. It then begins to slow down with a constant angular acceleration. It completes 20 revolutions while stopping. Find its angular
A cannon fires a 9 lb projectile with an initial velocity of 60 m/s, at an angle of 15 degrees. Assuming that air resistance performs 2.50 kJ of work against the projectile, what is the maximum heig
A uniform 35 kg ladder (length = 7.90 m) leans against a smooth vertical wall. The base of the ladder is 12 ft from the wall. If the coefficient of friction between the ground and the ladder is 0.20
A ball of mass 8.0 g with a speed of 20.5 m/s strikes a wall at an angle 21.0o and then rebounds with the same speed and angle. It is in contact with the wall for 36.0 ms. What is the magnitude of t
When the sphere reaches the bottom of the ramp, what is its rotational kinetic energy? When the sphere reaches the bottom of the ramp, what is its translational kinetic energy?
Now a doubly 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' = 2R. What is the ratio of the masses
A rectangular block of copper has sides of length 13cm,23cm, and 38cm. If the block is connected to a 7.0V source across two of its opposite faces of the rectangular block, what are the currents tha
At very low signal frequencies, will the maximum values of I [current] through the resistor and V [voltage] across the resistor be relatively large, intermediate or small compared to a DC signal? Ex
A bar magnet is falling vertically through a horizontal loop of wire with the south magnetic pole entering the? loop first. What is the direction of the induced current (viewed from above) as the n
A potential difference of 15V is found to produce a current of 0.44A in a 3.6m length of wire with a uniform radius of 0.40 cm. Find the following values for the wire: (a) the resistance (b) the re
If you close the switch, which quantity reaches its maximum value first: current in the circuit or voltage across the inductor? As the current builds up in the circuit, what happens to the induced v
A single-turn square loop of side L is centered on the axis of a long solenoid. In addition, the plane of the square loop is perpendicular to the axis of the solenoid. The solenoid has 1290 turns pe
Nichrome wire of cross-sectional radius 0.769 mm is to be used in winding a heating coil. If the coil must carry a current of 9.50 A when a voltage of 3.00102V is applied across its ends, find the
Find the direction of the velocity of these free-spirited otters right after they collide.
An aluminum wire carrying a current of 4.0A has a cross-sectional area of9.010-6m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3.