|Explain why the thrust of a fixed-pitch propeller de- cases with increasing forward speed.

Q: In this example, the friction force between a vehicle's tires and the road provides the radial…

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Q: You place a crate of mass 26.3 kg on a frictionless 4.29-meter-long incline. You release the crate…

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Q: Magnitude and direction of an induced emf may be obtained by applying a. Faraday's law, b. Ampere's…

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Q: This time we have a crate of mass 25.6 kg on an inclined surface, with a coefficient of kinetic…

A: mass of crate (m) = 25.6 kg coefficient of kinetic friction = 0.291 acceleration (a) = 4.33 ms2

Q: A block of mass m = 2 kg is resting on a rough inclined plane of inclination 30° as shown in figure.…

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Q: A ball is thrown vertically upward from a point 80 ft above the ground with an initial velocity of…

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Q: Based on Newton's 3rd law of motion, if a child weighing 35 kg exerts a force equal to his weight to…

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Q: What are the units of the constant A? A hollow, thin-walled sphere of mass 14.0 kg and diameter 49.0…

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Q: How POLARIZATION DO OCCUR IN SCATTERING & REFLECTION OF LIGHT?

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A: Solution:-

Q: 1. A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10…

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Q: Which of the following forces does positive work on the box?

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Q: 5. A photon of light has a wavelength of 0.050 cm. Calculate its energy.

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Q: What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal…

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Q: 5. A 2.0-kg stone is dropped from rest at a height of 3.75 m. What impulse does gravity impart to…

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Q: Each 4 m length of a long cylinder (radius = 3 cr throughout its volume. What is the magnitude the…

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Q: 2. A large magnet is shown. (The north and south poles of the magnet are not shown.) A student…

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Q: What frequency sound has a 0.604 m wavelength when the speed of sound is 309 m/s?

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Q: In the circuit shown in the Figure, find a. the current in each horizontal branch and b. the…

A: Current in each branch is find by the KVL Voltage between a and b

Q: a falling object is experiencing a 900N force. What is the mass of the object

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Q: 2. If a man lifts a 20.0-kg bucket from a well and does 6.00 kJ of work, how deep is the well?…

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Q: A small sphere with mass 4.00 × 10¬6 kg and charge 5.00 × 10¬8C hangs from a thread near a very…

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Q: Brain waves of frequency 0-50 Hz is sent through a low pass filter with cut-off frequency= 30 Hz,…

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Q: 15. The period of a simple pendulum is T 1 son Earth. When brought to the Moon where g is 6-times…

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!