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John is farsighted and cannot see objects clearly that are closer to the eye than 65.0 cm. What is the focal length of the contact lenses that will enable her to see objects at a distance of 25.0 cm from her eyes? Could you include how you came to the answer.
Your roommate is an aspiring novelist. Because you are taking physics your roommate asks your opinion on a matter of physics. How many drops per second are keeping the annoyed protagonist awake
You hold a ruler that has a charge on its tip 2 cm above a small piece of tissue paper to see if it can be picked up, What is the minimum charge required to pick up the tissue paper
In an X-ray scattering measurement the first order diffraction peak is observed at ? = 16.5°. What is the angle of the third order peak
What is the electric potential energy of a system that consists of two protons 2.0×10?15 apart-as might occur inside a typical nucleus?
A piece of string 5.30 m long has a mass of 15.5 g. What must the tension in the string be to make the wavelength of a 128 Hz wave 120.0 cm.
A 8 kg box slides d = 4.2m down the frictionless ramp, after that collides with a spring whose spring constant is 250 N/m. angle is 30 degrees.
A projectile is shot on level ground with a horizontal velocity of 18 m/s and a vertical velocity of 41 m/s, Find the time the projectile is in the air. The acceleration due to gravity is 9.8 m/s2
While crossing campus you get your directions mixed up. You start traveling 278 m East; you then travel 101 m traveling 37 North of East, What is your final distance from where you started
A 4900 kg lunar lander is in orbit 60 km above the surface of the moon. How much work must the thrusters do
A standard tournament domino is 1.5 in wide and 2.5 in long. What relative speed is required
An ice cube sliding along the ground at 5 m/s goes off a ramp pointed straight up as shown, What is the speed of the ice cube when it comes down, just before it hits the ground
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
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