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An object of mass 2.98 kg, moving with an initial velocity of 4.97 m/s, collides with and sticks to an object of mass 2.54 kg with an initial velocity of -3.92 m/s. Find the final velocity of the composite object. vector velocity with i hat and j hat = (___ i + ____j) m/s
A movie camera with a (single) lens of focal length 95 mm takes a picture of a person standing 28 m away. what is the height of the image in millimeters on the film
You have been employed by the local circus to plan their human cannonball performance. For this act, a spring loaded cannon will shoot a human projectile, the Great Flyinski, across the big top to the net below. What do you tell the ringmaster
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. Find the angular frequency (omega) of simple harmonic motion
q1. what is the frequency of ultrasound in a medium if he wave length is 3.0 x 10-3 m and velocity is 1300 mmms?q2. an
A roofer is working on a roof that slants at 39.0° above the horizontal, he accidentally nudges his 89.0N toolbox
The astronomical object 4U0142+61 has the distinction of creating the most powerful magnetic field ever observed. What force does this wire experience
A pendulum has a period of 0.80s on Earth. What is its period on Mars, where an acceleration of gravity is about 0.37 that on Earth.
A small rock with mass 0.200 kg is fastened to a massless string with length 0.750 m to form a pendulum. What is tension in the string at the lowest point
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.49 m above the bottom of the chute and with an initial speed of 1.55 m/s. How far from the bottom of the chute does the toy zebra come to rest
An airplane maintains a speed of 567 km/h relative to the air it is flying through as it makes a trip to a city 745 km away to the north.
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
How much work does the string do on the boy if the boy walks a horizontal distance of 11m away from the kite? How much work does the string do on the boy if the boy walks a horizontal distance of 11m toward the kite.
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