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Q: Satellites around the Earth are often used to relay TV stations to different places. A mobile ground...

A: A geosynchronous orbit has the same time period as that of the Earth. Hence, Time period of a geosyn...

Q: You travel to a star 135 light-years from Earth at a speedof 2.90 X 108 m/s What do you measure this...

A: Given: The distance of the star is 135 ly. The speed is 2.90x108 m/s.

Q: The fastest spaceship ever launched was the Helios 2 spacecraft. At its closest approach to the sun,...

A: Given : Velocity of the space ship, v=69000 m/s Time elapsed of the moving clock, ∆t0=1 yr    

Q: Cable Cars The Los Angeles Cable Railway was driven by a 13-foot-diameter drumthat turned at a rate ...

A: If a point is moving with uniform circular motion on a circle of radius r so that the linear velocit...

Q: For a specific wavelength of light the index of refraction of glass is 1.71 and for water 1.33. (a) ...

A: Brewster's angle (also known as the polarization angle) is an angle of incidence  at which light wit...

Q: Two rubber bands pulling on an object cause it to accelerate at 2.4 m/s^2. What will be the object's...

A: Assume that when two rubber bands pulling on an object force exerted on it F. Acceleration of an obj...

Q: A drop of oil on a pond appears bright at its edges, whereits thickness is much less than the wavele...

A: In optics, the refractive index of light is given by the ratio of the speed of light in empty space ...

Q: Differentiate between endothermic reactions and exothermic reactions?

A: Endothermic Reactions: A reaction that the system absorbs energy from its surrounding in the form of...

Q: Physics Question

A: Velocity in the position time graph is given as the slope of the graph. In the segment A to B, the v...

Q: The concurrent forces act on the screw shown. Determine the magnitude and direction of the resultant...

A: The direction of the force P is, The direction of the force Q is, The direction of the force F is,

Q: A bicycle wheel (diameter = 0.6 m) rotates from rest to 3 rev/s in 5 s with a constant angular accel...

A: Angular displacement Δθ=12ω0+ωtΔθ=120+3 rev/s5 s2π rad1 rev=15π rad

Q: Given two 12-cm-focal-length lenses, you attempt to make a crude microscope using them. While holdin...

A: Given The focal length of objective             fo = 12 cm The focal length of eyepiece             ...

Q: PH 121 Quiz #10 As you walk, your body moves up and down. If you are wearing a backpack, the motion ...

A: Hi. Since you have posted a question with multiple subparts and not specified which subparts you wan...

Q: 3)  A particle of charge 3x10-9 C is located at point (0,0) in a certain coordinate system. Assuming...

A:

Q: Constants I Periodic Table A spherical balloon has a radius of 7.45 m and is filled with helium. Par...

A: FB is buoyant force on balloonWHe is weight of Helium gasWB is weight of balloonWCargo is weight of ...

Q: A light rigid rod 1.00 m in length rotates about an axis perpendicular to its length and through its...

A: The length of the rod, l = 1 m Mass of first particle, m1 = 4 kg Mass of second particle, m2 = 3kg S...

Q: 5. An electron in the first energy level of a hydrogen atom is 5.3x10-11 m from the nucleus. What is...

A: Let the orbital speed of the electron be v, the radius of the first orbit be r, and the mass of the ...

Q: To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and i...

A: The volume of the solid part is given by, Vsolid=Mρsolid Here, M is the mass and ρsolid is the densi...

Q: A crate with a mass of 5 kg is on a ramp that is inclined at an angle of 30° fromthe horizontal. A f...

A: Since we only answer up to three sub-parts, we will answer the first three. Please resubmit the ques...

Q: On the diagram attached indicate and label:    a. a crest and a trough of the wave.   b. one...

A: A wave consists of trough and crust

Q: A ball rolls off a table that is 1.17 m high with a horizontal velocity of 1.34 m/s.  What are the c...

A: H = 1.17 m Vx = 1.34 m/s Using equation of motion in vertical direction Vy2 - Uy2 = 2 (g)H Vy2 - 0 ...

Q: A biker travels along a straight road to the east for 100 meters in 4 seconds and then to the west f...

A: The expression for the average speed of the biker is, v=x1+x2t1+t2

Q: If you put a helium-filled balloon in therefrigerator, (a) will its volume increase, decrease, or st...

A: (a) When you put a helium-filled balloon in the refrigerator, its, volume decreases. As the temperat...

Q: A toy car of mass m is pushed along a frictionless track so that it is moving at a speed v1. It hits...

A: Given quantities: mass of the car = m speed of the car = v1 spring constant = k maximum compression ...

Q: A stroboscopic photo of a club hitting a golf ball, such as the photo shown in the figure below, was...

A: Given, a stroboscopic photo of a club hitting a golf ball. The ball was initially at rest u = 0 m/s,...

Q: A 2000 kg ball falls from a height of 30 meters.a) How fast it is traveling when it is 7 meters off ...

A: A) As per the conservation law of energy, Here, m, g, v, and h represent the ball’s mass, velocity,...

Q: A 2.4-kgkg block slides on a horizontal surface with a speed of v=0.90m/sv=0.90m/s and an accelerati...

A: To determine, the coefficient of kinetic frictionμ between the block and the surfaceand  is the magn...

Q: International soccer star and Rochester native Abby Wambach crosses a soccer ball to you, expecting ...

A: We need to find the net force exerted at point B in magnitude and direction. This problem can be sol...

Q: Your pet dog is running around the grass in your back yard. He undergoes successive displacements 3 ...

A: Given data: The first displacement distance of the dog towards south direction is d1=3 m. The secon...

Q: There is a one-dimensional lattice with lattice constant a as shown in Figure 1. An atom transits fr...

A: The average or mean displacement, x→=∑xi⇀pi After one step,(z seconds) xi→: +ai⏜           -ai⏜pi: p...

Q: Two parallel long wires are d apart and carry currents I, and Iz (I, < I2) in the same direction. De...

A: The magnetic field at wire current  I2 due  to current  carrying wire I1 is B=μ0I12πd Force experien...

Q: A baseball of mass m = 0.155 kg is suspended vertically from a tree by a string of length L = 1.1 m ...

A: the figure can be given as      

Q: A lens is made of a material with an index of refraction n=1.25In air, it is a converging lens. Will...

A: Refractive index of lens, n =1.25  refractive index of water, n' = 1.33

Q: A Carnot engine takes in heat at a temperature of 820 K and releases heat to a reservoir at a temper...

A: Given Data: The temperature of the cold reservoir is, Tc=470 K The temperature of the hot reservoir ...

Q: The plates of a parallel-plate capacitor are maintained with constant potential by a battery as they...

A: The capacitance can be expressed as C=ε0Ad

Q: A force F = 2i − 3j + k acts at the point (1, 5, 2). Find the torque due to F(a) about the origin;(b...

A: (a) The position vector of the force about the origin is, The torque about the origin can be given ...

Q: Four identical charges Q are placed at the corners of a square of side L. (a) In a free-body diagram...

A: charge = Q  side = L

Q: A freshly prepared sample of a certain radioactive isotope has an activity of 3.7 × 1011 decays/s. A...

A: Relation between activity of the radioactive isotope and half life R=R0e-tT1/2-tT1/2=lnRR0T1/2=-tlnR...

Q: An athlete with a mass of 50.0 kg is doing pushups as shown in the figure below. The value for rW⊥ i...

A: Given : Mass of athlete (m) = 50.0 kg rW⊥ = 0.95 m rR⊥ = 1.56 m

Q: (a) What is the unknown emfx in a potentiometer that balances when Rx is 10.0 Ω , and balances when ...

A: (a)  From the balance condition of the potentiometer, the unknown standard emf can be given by,

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!