A 7-Kg man stands on a bathroom scale in an elevator. What does the scale read it the elevator is descending with an acceleration of -3.0 m/s 7? Downward direction is identified with negative sign.

Q: A 9 kg block is on a frictionless table and is moving at 21 m/s around in a circle that has a radius…

A: As per the answering guidelines we will solve the first question only. Please upload the other part…

Q: Show me how to solve it step by step, thank you in advance

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Q: 4. A skier is going down a hill with an angle of 30°. His weight is 60kg and his normal force is…

A: Given- Angle made by hill to horizontal (θ) = 300 Weight of skier (W) = 65 kg (W = mg ) Mass (m) =…

Q: A concave mirror (f= +12.5 cm) creates a virtual image of an 5.3 cm tall object. If di is -18.3 cm,…

A: Using the mirror formula and sign convention,we can calculate the magnification as follows

Q: Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with…

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Q: Why does the answer stop

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Q: The springs of a 1200-kg car compress 4.80 mm when its 63.0-kg driver gets into the driver's seat.…

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Q: Given the mass of a radioactive material, phosphorus 32P is 0.60 g and its half-life, T1/2 is 14.3…

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Q: 1 0 3 000 예 2

A: Lenz's law states that the current induced in a circuit due to a change or a motion in a magnetic…

Q: Positive charge Q is distributed uniformly around a very thin conducting ring of radius a, as in…

A: Given  A charged ring having uniform charge Q .

Q: J: The electric field of a plane wave propagating in a nonmagnetic material is given by E = [y3…

A: Solution - An electric field (sometimes E-field) is the physical field that surrounds electrically…

Q: You stand in an elevator on a scale. If the scaled reads 9/10 of your weight, what is the…

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Q: The circuit in the figure below has been connected for a long time. Let R₁ = 7.60 Q and R₂ = 3.00 .…

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Q: Mk=0.7. 10 kg TIR A 10-kg box is at sliding to the right on the floor. A rope is attached to the box…

A: mass of box = m = 10 kg co efficient of friction = 0.7 acceleration = a = 6 m/s2

Q: A thin 12-cm-long solenoid has a total of 460 turns of wire and carries a current of 1.9 A.

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Q: Question 6 What is the pressure exerted on the bottom of a 1 metre deep swimming pool by the water…

A: Depth of water ( h) = 1 mDensity of water (ρ) = 1000 kg/m3acceleration due to gravity (g) = 9.8…

Q: satellite has a mass of 5.00 x 10 ne mass of the Earth is 5.98x102 Calculate the gravitational force…

A: Gravitation force between two masses F = Gm1 m2 /r2

Q: 1.05 (b) The elevator continues upward at constant velocity for 8.2 s. (i) Newton's Law in the…

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Q: The sound loudness 5.0 m from a point source is 95 dB. At what distance will it be 75 dB? Hint:…

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Q: Find the average binding energy per nucleon of Mg. Select one: O 8.26 MeV/nucleon O 8.62 MeV/nucleon…

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Q: than 45 thr A horizontal drainpipe 6 m above sea level empties storm water into the sea. If the…

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Q: Which of the following correctly orders electromagnetic waves by increasing frequency? a. radio,…

A: There are 7 electromagnetic waves. In order of increasing frequency electromagnetic waves are given…

Q: A light ray in plastic (n=1.45) hits an air/plastic boundary as shown below. The ray will be.? 45°…

A: The ray will get refracted if the angle of incidence is smaller than critical angle. And will be…

Q: The image of a distant object created by a concave mirror will be. a. formed at the focal point of…

A: Given The image of a distant object created by a concave mirror will be, as following below.

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: