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Q: 10. A 4,000 kg boat floats with one-third of its volume submerged. If two more people get into the b...

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Q: What principle is the hydraulic press below showing?

A: Pressure= force/Area = F/A

Q: A slab is subjected to two forces F and F, of same magnitude F as shown in the figure. Force F2 is i...

A: We have 2 forces F1 and F2 both having magnitude F. F2 acts on the xy plane as shown while F1 acts o...

Q: The capacitor of capacitance C is charged to a potential difference AV and disconnected from the bat...

A: We have a parallel plate capacitor of capacitance C which is charged to a potential difference (delt...

Q: A battery is connected to a wire, and makes a current in the wire. Which of the following changes wo...

A: We know that, From ohm's law V= I R Where V is the applied voltage  I is the current through the wir...

Q: Using the schematic symbols of a circuit, make a schematic diagram of three resistors connected in p...

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Q: How does the value of the coefficient of static friction affect the frictional force? (What happens ...

A: CO-EFFICIENT OF FRICTION The "friction coefficient" is defined as the ratio of the maximum static fr...

Q: A light ray passes through a glass lens, shown in cross section in the figure below. Find the angle ...

A: Given :    θ 1= 41°, θ 2=22° , θ 3=27°

Q: Calculate the magnitude and direction of the electric field 0.65 m from a - 7.85 x 10 -9C point char...

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Q: frictionless pulley at the top of the inclines as shown, so the blocks can slide together. The mass ...

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Q: When light passes between two different media (i.e. oil and water), and the index of refraction of t...

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Q: A slab is subjected to two forces F and F, of same magnitude F as shown in the figure. Force F2 is i...

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Q: 1. What is the definition of momentum?

A: Answer- Momentum is defined as the product of mass and velocity of an object Let m be the mass of th...

Q: Q 18) What is the sound intensity level in decibels for an ultrasound with a intensity (W/m2 105)?

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Q: 1. Why is it important that the motion of the wooden ball in the activity is kept horizontal?

A: The tension in the string provides the centripetal force. Centripetal force is always directed in th...

Q: Two 8.0-Ω resistors are connected in parallel, and this combination is connected in series with 4.0 ...

A: Equivalent resistance in series R = R1 + R2     Equivalent resistance in parallel 1/R = 1/R1 + 1/R2 ...

Q: 1) A discus thrower starts his spin while standing facing the back of the circle. He releases the di...

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Q: As an object acquires a positive charge, its mass usually a. decreases. b. increases. c. stays the s...

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Q: Pin A, which is attached to link AB, is constrained to move in the circular slot CD. Knowing that at...

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Q: A bullet of mass 11.7 g is fired into an initially stationary block and comes to rest in the block. ...

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Q: 9) Four bars, all exactly the same size, are placed with one end in boiling water. The times taken f...

A: The material with the less thermal conductivity takes more time to conduct heat through it. The high...

Q: magnets mass 1s 6.37 kg and the magnetic force pulling it to the right is 105.4 N. The length of the...

A: Given: Mass of the magnet m : 6.37 kg Force F = 105.4 N Length of cord l = 1.62 m Height of ceiling ...

Q: distributed on the surface only with the radius R. R Indicate that if the test particle is in the in...

A: Indicate that if the test charge is in the interior of the star then the cross orbit is striaght lin...

Q: A car travels on a 4% uphill road at 60 kph. The coefficient of friction between the road surface an...

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Q: A steel wire having a radius of 2.0 mm, carrying a load of 4kg, is hanging from a ceiling. Given tha...

A: Answer:-  Given  Radius of the wire(r) = 2.0 mm = 2 × 10-3 m  Area of the wire(A) = π r2  A = 3.14 ×...

Q: ge following circuit 10 n3 10 µF 4 T72 V 1. 60 μC 2. 2 µC ww

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Q: A boll rounds a 42 m radius curve at 18 m/s. The magnitude of it's acceleration in m/s2

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Q: Calculate the momentum of a car that has a mass of 975 kg and a velocity of 9-3 m/s ?

A: Given, Mass of the car, m = 975 kg velocity of of the car, v = 9.3 ms

Q: The earth's radius is 6.37×10^6m; it rotates once every 24 hours. What is the earth's angular speed?

A: Angular speed of a rotating object is given by ω = 2πT, where T = the time period or time taken for ...

Q: (a) Find the far point of an eye for which a prescribed lens has an optical power of -0.65 d. (b) ...

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Q: Find the focal length of a lens that produces an inverted image six times the size of a small object...

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Q: A microscope objective with a magnification of 15 is used in a microscope with a magnification of 51...

A: Given, microscope objective with magnification, mo = 15 magnification of microscope, m = 51 Image is...

Q: An airplane wing is designed so that the speed of the air across the top of the wing is 251 m/s when...

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Q: A slab is subjected to two forces F and F, of same magnitude F as shown in the figure. Force F2 is i...

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Q: Determine the charge on the capacitor in the following circuit 4Ω T72 V 10 Ωξ 10 μ 1. 60 με 2. 2 µC ...

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Q: The lens in the figure below is made of glass of index 1.50 and have surfaces with radii of curvatur...

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Q: The aorta carries blood away from the heart at a speed of about 40 cm/s and has a radius of approxim...

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Q: Breakdown and explain the motion of a projectile enumerating the relation of its components to a rec...

A: In this question we have to explain the motion of a projectile enumerating the relation of its compo...

Q: It is known that the alpha particle He, has two protons and neutrons. If the masses of the protons a...

A: Known values:Mass pf proton: mp=1.0073 amuMass pf neutron: mn=1.0087 amuMass of alpha particle, mα=4...

Q: y O' ↑ 80 cm + 60 cm → For a uniform rectangular sheet shown in the figure, the ratio of moments of ...

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Q: Two charges are placed along the x axis, with charge QA placed at the origin and charge QB placed at...

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Q: A person throws a ball upward into the air at an initial velocity of 15.0 m/s. Calcate the time (t) ...

A: Here acceleration (a) is g = 9.8m/s^2 (this will be negative since it is going in the opposite direc...

Q: Three charged particles lie on an x axis. Particles 1 and 2 are fixed in place, while particle 3 is ...

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Q: 10. A 4,000 kg boat floats with one-third of its volume submerged. If two more people get into the b...

A: Given  Weight of each people , W = 690 N   Volume of water displaced, V=?

Q: The figure shows a 11.5 V battery and four uncharged capacitors of capacitances C1 = 1.30 µF,C2 = 2....

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Q: 4.103 On June 24, 2003, a violent tornado occurred near Manchester, ND. A pressure drop of 100 mbar ...

A: As we know the relationship Between velocity and pressure, v = √(γP/ρ)  Given,  γ = 1.4 (air)  P = 1...

Q: An elevator accelerates upward at 4 m/s^2. The cable can safely handle a tension up to 5000 N. Suppo...

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Q: The makers of a certain automobile advertised that their car could accelerate from 15 miles per hour...

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Q: A balanced three - phase, three - wire abc system has delta - connected load witha 50 Q resistor, a ...

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Q: 6. A solid cylinder (radius = 13.5 cm, height = 13.5 cm) has a mass of 6.57 kg. This cylinder is flo...

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.