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The angular momentum of a flywheel having a rotational inertia of 0.849 kg·m2 about its central axis decreases from 7.60 to 0.410 kg·m2/s in 2.50 s.
(a) What is the magnitude of the average torque acting on the flywheel about its central axis during this period?
(b) Assuming a constant angular acceleration, through what angle does the flywheel turn?
(c) How much work is done on the wheel?
(d) What is the magnitude of the average power done on the flywheel?
A 1.0mL syringe has an inner diameter of 6.0mm , a needle inner diameter of 0.29 mm , and a plunger pad diameter (where you place your finger) of 1.2 cm . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100mmHg...
a 6cm diameter horizontal pipe gradually narrows to 4cm. whenwater flows throught this pipe at a certain rate the
A firecracker is tossed straight up into the air. It explodes into three pieces of identical mass just as it reaches the highest point. Evaluate how fast is the third piece moving
a ball hung from a vertical spring oscillates in simple harmonic motion with an angular frequency of 2.6 rad/s, What is the maximum acceleration of the ball
In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80m/s^2. What is its initial velocity as it leaves the ground
The North Star (Polaris) is a distance 431 ly away and radiates energy in the form of light at a rate of 8.6 x 1029 W. What is the intensity of this light at the Earth
a baseball leaves the bat with a speed about 45 ms which is greater than its terminal speed in air when droppeed from
An electron (mass=9.1*10^-31 kg) is bound in a finite 1D square well w/ a width of 1.0 nm and a depth of 0.30 eV. How many bound states are there? (Please provide steps and not just an answer).
You are told that there are 17 charges with the same charge Q > 0 C and 19 charges with the same charge - Q in a closed container of arbitrary shape. Calculate the net electric flux through the container
A parallel-plate capacitor has plates with an area of 850 cm2 separated by 1.8 mm. What is the electric field between the plates when they are charged with 5.000 x 10-7 C
You lay a mirror flat on the floor with one edge against a wall and aim a laser at the mirror. Find the angle of incidence of the laser ray on the mirror
Your cell phone battery states that it has a capacity of 1200mAh. That means it can provide constant current supply of 1200mA for 1 hour (or 3600 sec), Your battery provides a constant voltage of 3.7V. What is the energy in Joules stored in the bat..
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