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Q: The displacement during the first six seconds. a. 20m b. 25m c. cannot be determined d. 0m

A: Given data:  The position vs time graph Required: The displacement during the first six seconds

Q: Mary applies a force of 78 N to push a box with an acceleration of 0.49 m/s2. When she increases the…

A: Draw the free-body diagram of the system.

Q: During a car crash a 65 kg person’s head goes from travelling at 50 km h−1 to stationary in 0.15 s.…

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Q: A cat leaps to catch a bird. If the cat's jump was at 60.0° off the ground and its initial velocity…

A: Write the expression for the maximum height. H=u2sin2θ2g Here, u is the initial velocity, θ is the…

Q: * Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above…

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Q: 8. A series L-C-R circuit with R=20 S2, L=1.5 H and C=35 µF is connected to a variable frequency 200…

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Q: A soccer player running on a level playing field kicks a soccer ball with a velocity of 9.4 m/s at…

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Q: (ui)x 10 8 6 4 2 ม -6 N 5 6 8 t(s)

A: Given: position vs time graph To find: acceleration of the body in the first two seconds

Q: Draw force diagrams for the ball (a) while it is falling and (b) while it is being caught. (c)…

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Q: A garden spider of mass 0.0000825 kg hangs motionless from its web. a. Calculate the tension, in…

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Q: A force of 36.0N acclerates a 6.0kg block at 7.0m/s2 along a horiztonal surface. How large is the…

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Q: Two blocks on a horizontal, frictionless surface are in contact with one another, pushed by a…

A: mass of the block,  m1 = 3 kgm2 = 10 kg the magnitude of horizontal force, P = 8 N

Q: across a battery. The same battery supplies a current of O when connected across a 9 resistor. The…

A: Internal resistance refers to the opposition to the flow of current offered by the cells and…

Q: energy

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Q: A projectile is launched from point A with speed vo= 30 m/s. Determine the value of the launch angle…

A: Write the equation of projectile motion and determine the final equation at the final point on the…

Q: Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he…

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Q: While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The…

A: Given Data: Mass of box m. Kinetic friction between the box and floor μ=0.396 The external force is…

Q: Calculate the acceleration due to gravity (g) in m/s2 on a planet, other than Earth, where a 5 kg…

A: Given data:  Mass (m) = 5 kg Weight (W) = 20 N Required: The acceleration due to gravity (g) on the…

Q: a light torsionless string at a distance of 10-2 m vertically ve a long, straight horizontal wire…

A: Here, we calculate  the frequency  of oscillation of the magnet  as given follow;

Q: 3. What is the apparent rule for combining equal resistances in parallel combination circuits? Cite…

A: we have to dicuss the rule for finding equivalent resistances in series and parallel connection of…

Q: Spitting cobras can defend themselves by squeezing muscles around their venom glands to squirt venom…

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Q: An automobile of mass 2 500 kg moving at 50.0 m/s is braked suddenly with a constant braking force…

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Q: A machine carries a 7.0 kg package from an initial position of d = (0.6 m )i + (0.79 m )Ĵ+ (0.28 m…

A: Given value--- mass = 7 kg. at t =0 s   di = 0.6 i + 0.79 j  + 0.28 k.  at t  = 15 s df = 11.5 i +…

Q: A telephone on Earth's surface has a weight of 1.80 N. Planet X has a mass twice as big as Earth's,…

A: Weight of the phone on the earth's surface, W = 1.80 N the radius of the planet X, Rx = 3Re mass of…

Q: A series RLC circuit has a 100-Ω resistor, 2.0-mH inductor and a 4.0-µF capacitor connected across a…

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Q: A train leaves Little Rock, Arkansas and travels north at 85 kph. Another train leaves at the same…

A: The two trains, one moving north and the other moving south, are moving in opposite directions.…

Q: A ball is kicked from the ground with an initial speed of 10 m/s at a 50 degree angle with the…

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Q: 3. Find the equivalent resistance of the circuit: 120 V +1 IT Rea R₁=392 R6=1202 www R₁=100 R₂=202…

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Q: 1. Find Rab for the circuit shown below: ao Rab bo 8 Ω www 18 Ω Μ 9Ω 20 Ω ΣΩ www 20 Ω ΤΩ www 292 T

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Q: Part 1) Please draw and label a free body diagram of Harzan at the bottom of the swing.  Part 2)…

A: We have to discuss the motion of the swinging person

Q: The position of a particle as a function of time is given by: F(t) = (8t + 6t³)i + (10-2t²)ĵ where r…

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Q: A mangetic lift used to hoist very heavy iron objects at a scrap yard lifts a car of mass 2367.55 kg…

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Q: (a) A 15.0 kg block is released from rest at point A in the figure below. The track is frictionless…

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Q: The coefficient of friction between a race car's wheels and the track is 1.0. The car starts from…

A: Ans : option (c) 73 m/s is correct. Explanation:

Q: Rectilinear Motion The 250 lb concrete block A is released from rest in the position shown and pulls…

A: Given, Take  g= 32.2 ft/sec2

Q: A 4.0cm^3 block of lead has what mass?

A: Given value--- volume = 4 cm3 . density of lead = 11.34 g/cm3 . We have to find--- mass ?

Q: The bar shown below is inclined at 45 degrees with the horizontal and at equilibrium. The force at C…

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Q: 3. A ball is dropped from the top of a 100.0 m high building and a second ball is propelled up from…

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Q: a) In this experiment you are measuring the change of potential AV over small displacement Ar. In…

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Q: A 99-kg box, initially at rest on a frictionless surface, ac while acted on by a constant horizontal…

A: From Newton's second law of motion , we know that  F = mass * acceleration.

Q: Why are NASCAR tracks banked, angled up, on the curves?  a) A banked track provides a normal force…

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Q: The octave-band sound-pressure-level data generated by an electric shaver in the presence of random…

A: The Given Table of noise vs band center frequencies are: Frequency(Hz) Noise (dB) 63 60 125…

Q: Ex 12 If the value of acceleration due to on the surface of the earth is 9.8 m/s², gravity find the…

A: Given, acceleration due to gravity, g=9.8 m/s2 the radius of the earth, r=6400 Km Gravitational…

Q: Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is…

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Q: Please refer to the picture with the formulas and constants that need to be used in this problem.…

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Q: 2. Given four resistors with resistances equal to 2, 3, 8 and 12 , sketch an arrangement using all…

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Q: Why is  thermal energy not importanta and is a waste product of friction? Conversion to thermal or…

A: Mechanical energy can be either potential or kinetic. Thermal energy refers to the energy contained…

Q: Write an abstract of at least 1000 words about Becquerel's use of potassium uranyl sulfate on…

A: The discovery of a form of radiation that could pass through solid matter fired the imagination of a…

Q: Bob pushes on a frictionless cart of mass 12.5 kg and the cart has an acceleration of 11.3 m/s². If…

A: According to Newton second law F= MA HERE F is applied force M is mass of object A is acceleration…

Q: A 575 kg car moving at 19.0 m/s hits from behind another car moving at 13.3 m/s in the same…

A: Given value--- A 575 kg car moving at 19.0 m/s hits from behind another car moving at 13.3 m/s in…

Speed of light

The speed at which the light travels in a vacuum is unbiased for both the source and inertial frame of reference of the observer. This was postulated by the physicist, Albert Einstein, by observing the theory of electromagnetism of Maxwell. Also, there was no evidence for the luminiferous aether, that is, the medium for the propagation of light where the electromagnetic field exists.