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A(n) 641 N man stands in themiddle of a frozen pond of radius 11.7m. He is unable to get to the other sidebecause of a lack of friction between hisshoes and the ice. To overcome thisdifficulty, he throws his 1.2 kg physics textbookhorizontally toward the north shore, at a speed of6.7m/s. The acceleration of gravity is9.81m/s2. How long does it take him toreach the south shore?
A concave shaving mirror has a focal length of 95 cm. find the image position of a cologne bottle placed in front of the mirror at a distance of 165cm. Calculate the magnification of the image. Is the image real or virtual? Is the image inverted o..
while taking a ride in a hot-air balloon innapa valley francisco wonders how high he is. to find outhe chooses a
A 2.0 kilogram softball is pitched to you at 20 m/s. You hit the ball back along the same path, and at the same speed. find the magnitude of the average force the bat exerted
Utilizing an information provided in your course text, complete the "Motivation Concepts Table." This table will serve as a convenient quick reference for the remainder of the course.
Sally is doing toe-presses on a leg press machine (knees are locked out and legs are parallel to the floor, ankle is plantar flexed to 35 degrees (zero is the anatomical position). The footplate is providing a resistive force parallel to the floor o..
two resistors r1 and r2 are in series with a 7.8 volts battery. if r1 has a resistance of 2.0 omega and r2 receives
The owner of a van installs a rear-window lens that has a focal length of -0.295 m. When the owner looks out during the lens at a person standing directly behind the van, the person appears to be now 0.242 m from the back of the van, and appears to b..
A 110 g hockey puck sent sliding over ice is stoppedin 14 m by the frictional forceon it from the ice. If its initial speed was 7.0 m/s, what is the magnitude of the frictional force
The windings of a DC motor have a resistance of 6.0 O. The motor operates on 120. V AC, and when running at full speed it generates a back emf of 105. V. What is the starting current of the motor
How fast must an alpha particle (m = 6.68×1027 kg, q = 3.20×1019 C) travel perpendicularly to the Earth's magnetic field in a laboratory (B = 5.02×105 T) for it to describe a circular path of radius 2.34 cm
Light strikes a sodium surface, causing photoelectric emission. The stopping potential for the ejected electrons is 3.2 V, What is the wavelength of the incident light
A solid conducting sphere of radius 2.00 cm has a charge 13.00 µC. Find the electric field at r = 1.00 cm from the center of this charge configuration
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