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A battery designed for charging cell phones is rated at 4300 mA·h. To the nearest coulomb, how much charge is stored in the battery?
To prevent damage to floors (and to increase friction), a crutch will often have a rubber tip attached to its end. by what factor does the tip reduce the pressure exerted by the crutch
The ratio of the three frequecies F1:F2:F3 is 4:5:6, that is F2 = (5/4)F1 and F3=(6/4)F1 Keep in mind that after cutting it into three peices, two of them would be closed at end, and one of them would be open at both ends. What is the length of ea..
at a certain time a particle had a speed of 20 ms in the positive x direction and 2.2 s later its speed was 30 ms in
A 17.0-g piece of Styrofoam carries a net charge of -0.75 µC and is suspended in equilibrium above the center of a large, compute the charge per unit area on the plastic sheet
In a particular Compton Effect experiment, it is observed that the wavelength of the scattered photon is equal to two times that of the incident photon when the photon detector is placed at Θ =60o. What is the wavelength of the incident photon
A 10-kg mass is moving with a speed of 5 m/s. How much work is required to stop the mass
At age forty, a man requires contact lenses (f = 65.0 cm)to read a book held 25.0 cm from his eyes. At age forty-five, he finds that while wearing these contacts he should now hold a book 30.0 cm from his eyes.
A window washer of mass 86 kg stands at a distance d from the midpoint of the scaffold. The tension in the cable nearest the worker is twice the tension in the other. Illustrate what is the tension in the cable nearest the worker? What is the tens..
Medical ultrasound. Ultrasound with = 5.8is used in a medical imager. Find the wavelength in air, with sound speed 343. Find the wavelength in muscle tissue
After investing $1000 at an annual interest rate of 7% compounded continuously for t years, your balance is $B, where B = f(t). What are the units of dB/dt? What is the financial interpretation of dB/dt?
a rock is dropped from a tall bridge into the water below. if the rock begins with a speed of zero and has a speed of
Consider an elastic collision in one dimension that involves objects of mass 2.7 kg and 4.3 kg. Find the velocities of the two objects after the collision
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