Why do objects with different masses fall at the same rate during  free fall?

Q: A train is moving with constant deceleration travels 24 ft during the 10th second of its motion and ...

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Q: If the van has a speed of 23 km/h when t = 0, determine its speed when t = 5 s.

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Q: Part A A7600-kg railroad car travels alone on a level frictionless track with a constant speed of 17...

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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

A: Given data :                  Speed  =  V                 Radius  =  R        To find :             ...

Q: 1. Calculate the electric dipole moment for the following charge configurations. -39 2a a +q -29 (c)...

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Q: A thin ring of mass 2.3 kg and radius 0.66 m is rolling without slipping along a horizontal surface ...

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Q: Which figure correctly shows the absolute value of the electric potential as a function of a distanc...

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Q: Calculate the velocity of the target ball after the collision. A ball of mass 0.265 kg that is movin...

A: mass of ball, m1 = 0.265 kg initial speed of ball, u1 = 507 m/s final speed of ball, v1 = 3.9 m/s in...

Q: Consider the pair of charges: 8.6 μC at x = - 2 cm and Q at x = 4 cm. If the net electric field at t...

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Q: A 200 Kg bus sppeds along at 56 mph. The coefficient of friction between the tires and road is 0.8 i...

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Q: Three charges, QA=-4.1 µC, QB=5.0 µC, and Qc=2.9 µC are places on xy plane as shown in the picture b...

A: We have 3 charges QA=-4.1 uC, QB=5 uC and QC=2.9 uC at positions r1=(0,3.4), r2=(-3.4, -3.4) and r3=...

Q: FM radio station KRTH in Los Angeles broadcasts on an assigned frequency of 101 MHz with a power of ...

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Q: When a dieletric material is inserted to fill the space between the capacitor plates, does the energ...

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Q: Consider a transformer where the secondary winding is connected in series to a resistor with resista...

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Q: At point B, a 240.0 kg roller coaster car is moving at 22 m/s. Assuming there is friction from point...

A: Given  mass of car, M = 240. 0 kg  Speed at B, V = 22m/s  Height of point B ,Yb = 30 m   Height of p...

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: Write down the Doppler formula for light as an equation. Explain each letter's meaning. Then compute...

A: Doppler effect is a common phenomenon that we observe in our everyday lives. For instance, if you ar...

Q: For a uniform rectangular sheet shown in the figure, the ratio of moments of inertia about the axes ...

A: The moment of inertia of a rectangular plate about the axis perpendicular to the sheet and through t...

Q: A 5 kg cart, cart A, moves with v=3m/s and collides with another 5 kg cart, cart B, head on at rest....

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Q: why hot air rises

A: we know desity is massvolumeso if the volume expand then the  density become lower.  

Q: A 70.0 cmcm, uniform, 40.0 NN shelf is supported horizontally by two vertical wires attached to the ...

A: A system is said to be in equilibrium when  1.Net torque = 0 2. Net force = 0 

Q: 3. ectron in a magnetic field moves along a circle with a radius R and a speed that follows: v{(t) =...

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Q: A 1 kg mass moves on a horizontal surface and collides with a 2 kg mass, initially at rest.  The mas...

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Q: mine the electric potential everywh= A uniform charge density p fills half n two parallel infinite c...

A: Question 1 ) A uniform charge density ρ fills half of the space between two parallel infinite condu...

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

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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: the South American eel are arranged in 140 rows, each row stretching horizontally along the body and...

A: Given:- We know that We have given that the electroplates in the S.A  are arranged in 140 rows and ...

Q: A wave source has a wavelength of 0.60 m. Which of the following scenarios could cause the observer ...

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Q: An aluminum wire has resistance of 80 ohms at 30 degree Celsius. And determine its resistance when i...

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Q: icroscope objective with a magnification of 16 is used in a microscope with a magnification of 46. F...

A: GivenA microscope objective with a magnification, mo=16A microscope with a magnification, m=46The oc...

Q: A harmonic wave is traveling along a rope. It is observed that the oscillator that generates the wav...

A: Given  Wave complete 39.0 vibration in 28.0 sec  Wave travel maximum 425 cm along the rope in 15.0 s...

Q: nvex surface, is calle n which the reflectio TEXTBOOK EXERCISES spherical mirror isi 7. If the focal...

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Q: Wayne pulls a 305-N sled along a snowy path using a rope that makes a 45.0° angle with the ground. W...

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Q: (a) Find a 99% confidence interval for p. <p< (b) Find the margin of error for this 99% confidence i...

A: Given,  x = 355 n = 500 P = x/n = 355/500 = 0.71 Point estimate, P = 0.71 1-P = 1-0.71 = 0.29 At 99%...

Q: Convex Lenses When an object is placed at a distance d, from a lens of focal length f, and d, is gre...

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Q: A solenoid that is 106 cm long has a cross-sectional area of 20.4 cm². There are 727 turns of wire c...

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Q: A car is moving on a straight road at 10 m/s .it is accelerated at 14 m/s?. What will be it's veloci...

A: Given data :           Initial velocity  =  u           Acceleration  =  a             Time  =  t   ...

Q: A rectangular coil with sides 0.120 m by 0.210 m has 495 turns of wire. It is rotated about its long...

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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 data :                     Velocity  =  V                       Mass   =   m       To find :  ...

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: You detect a sound intensity of 0.0000136 W/m2 coming from a speaker with a power of 0.217 W. How f...

A: Given value--- sound intensity  = 0.0000136 W/m2 . power = 0.217 W. We have to find--- How far aw...

Q: In a flight between Ottawa and Toronto, an airplane follows the shown path from point A to point C. ...

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Q: Taking the wavelength of first Balmer line in hydrogen spectrum (n = 3 to n = 2) as 660 nm, the wave...

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Q: The circuit below contains two real batteries, each having significant internal resistance. Battery ...

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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: 1. Suppose a spaceship heading straight towards the Earth at 0.750c can shoot a canister at 0.500c r...

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Q: a) 64 m/s b) 44 m/s c) 24 m/s d) 51 m/s e) 58 m/s

A: According to work energy theorem Work done = change in kinetic energy Work done by conservative forc...

Q: Part A A 22-g bullet traveling 260 m/s penetrates a 1.6 kg block of wood and emerges going 130 m/s. ...

A: If a bullet of mass mb with velocity vb hits a block of mass mblock at rest (vblock=0). After hittin...

Q: What is the magnetic field at the position of the dot in the figure (Figure 1)?   Give your answer a...

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Q: Determine the charge in each capacitor and the voltage across each capacitor in Circuit B. Given: V3...

A: The charge stored in a capacitor connected to a voltage source is given by Q = CV, where C = the cap...

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!