A car is initially traveling at 50.0 km/h. The brakes are applied and the car stops over a distance of 35 m. What was magnitude of the car's acceleration while it was braking?   2.8 m/s2   5.4 m/s2   36 m/s2   71 m/s2

Q: A uniform beam of length 7.60m and weight 450 N is carried by two workers, Sam and Joe, as shown in ...

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Q: A flat square with sides 18 cm is placed in a uniform electric field of magnitude 5784 N/C. What is ...

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Q: Horizontal Field As compared to the horizontal component of the velocity at point Y, the horizontal ...

A: Initially horizontal component of velocity ux  = u  sinθ  initial vertical component of velocity  uy...

Q: Two meatballs are speeding directly toward each other. One is a 4.0-kg meatball moving with a speed ...

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Q: Press the hotspot that indicates latent heat of vaporization. 140 120 100 80 60 40 20 -20 Time Tempe...

A: Latent heat of vaporisation is the amount heat energy required to transform a liquid material into g...

Q: Heat is thermal energy in transit that "flows" from a region of high temperature to a region of low ...

A: The principle of calorimetry says heat lost by one body equals heat lost by other. Assuming no loss ...

Q: A system of two cables supports a ball as shown. 30° 150 N What is the tension in the right-hand cab...

A: Given data:  Weight (W) = 150 N Angle (θ) = 30° Required: Tension in right-hand cable 

Q: A roller-coaster car is moving at 20 m/s along a straight horizontal track. What will its speed be a...

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Q: A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reac...

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Q: 3. The MacKay Bridge over Halifax Harbour is designed to sway in high wind conditions to help absorb...

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Q: City A lies 30 km directly south of city B. A bus, beginning at city A travels 50 km at 37° north of...

A: City A lies directly 30 km south of city B Beginning of city A , a bus travels 50 km at 37onorth of ...

Q: A block is pulled along a rough level surface at constant speed by the force P. The figure shows the...

A: Option (D) is correct answer i.e. mg

Q: 5.8 A 100-cm block of lead that weighs 11 submerged in water. 1 cm of water weighs 0.0098 N. (a) Wha...

A: Buoyant force:-                       Buoyant force is defined as the net upward force on an object ...

Q: A 2.0-N rock slides on a frictionless inclined plane. Which one of the following statements is true ...

A: we know frictional force f =μN  where μ= coefficient of friction  N = weight of block given μ=0.30 f...

Q: A truck traveling four times as fast as a slower moving identical truck has how much more KE?

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Q: could measure Earth's diameter using nothing but a shadow-casting stick, a protractor, and a car's t...

A: We know that the cities must be on the same latitude line and at least 120 kilometers apart. For bot...

Q: A crate remains stationary after it has been placed on a ramp inclined at an angle with the horizont...

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Q: The acceleration function of an obje notion is a = {(-0.2t)i+4j+1.5k} m/s initial velocity vo = 8i m...

A: We know that the formula of the acceleration is given as  a = dvdt where a is the acceleration.  We ...

Q: stone is thrown at 16 m/s with an angle of 40° above the horizontal from the roof top of the buildin...

A: Given: The intial velocity of the object is 16 m/s. The angle of the projection is 40o.  

Q: An apple crate with a weight of 225 N accelerates along a frictionless surface as the crate is pulle...

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Q: 1. Which one of the following statements is true concerning scalar quantities?   A) Scalar quantiti...

A: The quantity which has only magnitude but no direction is known as scalar quantity. Ex- distance , s...

Q: A charge of -2.00 µC is placed at the origin of a xy coordinate system, and a charge of 5.00 µC is p...

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Q: There are three charges interacting to one another. Q2 which has a value of +3.52 nC is at the negat...

A: Q1 = 6.01 nC Q2 = 3.52 nC Q3 = -7.80 nC Distance between Q3 and Q1 = 0.45 m distance between Q2 and ...

Q: A box of muss m = 23.0 kg is pulled up a ramp that is m%3D inclined at an angle 0 = 13.0 angle with ...

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Q: Question 19 Given two vectors: M = -3î + 6j – 5k and N = -2î + 3j + k The expression 2Ñ - Mis: A No ...

A: M→ = -3i^ + 6j^ -5k^N→ = -2i^ + 3j^ + k^To find : 2N→ - M→  

Q: In which one of the following situations does the car have a westward acceleration?   The car trave...

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Q: A current of 17.0 mA is maintained in a single circular loop with a circumference of 1.40 m. A magne...

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Q: An electric field of 420000 N/C points due west at a certain spot. What is the magnitude of the forc...

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Q: A uniform beam of length 7.60 m and weight 450 N is carried by two workers, Sam and Joe, as shown in...

A:

Q: How much heat is needed to change 7.2 kg of solid ethyl alcohol at -211°C to liquid at 50.0°C? 2.419...

A: GivenMass of ethyl alcohol (m) =7.2 kgInitial temperature of ethyl alcohol =-211°CFinal temperature ...

Q: Question 14 In which one of the following situations does the car have a eastward acceleration? A Th...

A: According to question we need to find correct option.

Q: Name the missing force Student tension B normal c) mass friction bo F.

A: to name the missing force.

Q: A 1,200-kg car is pulling a 315-kg trailer. Together, the car and trailer have an acceleration of 2....

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Q: Which of the following scenarios describes heat according to its scientific definition? A It is the ...

A: The energy transfer from one body to another as a result of a temperature differential is referred t...

Q: A tennis ball is thrown upward at an angle from point A. It follows a parabolic trajectory and hits ...

A: 1) A trajectory of a tennis ball is as shown in the figure.   

Q: A speed boat pulls a water-skier (with a mass of 100 kg) at a steady speed by a rope at 15 degrees a...

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Q: A ball is thrown straight up from point A, reaches a maximum height at point B, and then falls back ...

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Q: Calcudate the Maxx of clrives af 2 m/s and how 30000 J of energy. thas

A: Given data :              Velocity  =  v             Kinetic energy  =  K•E            To find :    ...

Q: entist found evidence that mars may once have had an ocean that is 0.500 km deep. The acceleration d...

A: Given  Depth h = 0.5 km = 500 m  Acceleration due to gravity g = 3.71 m/s2  Density of water = 1000 ...

Q: Suppose that A = 2i + j, B =i- 4j + k, and Ĉ = j+k. What is the magnitude of the vector 2Ã – B + Č? ...

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Q: Your answer needs to have 2 significant figures, including the negative sign in your answer if neede...

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Q: Vo Horizontal Field As compared to the horizontal component of the velocity at point Y, the horizont...

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Q: tarazan tries to cross a river by swinging from one bank to another on a vine that is 15.0m long. Hi...

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Q: The space shuttle releases a space telescope into orbit around the earth. The telescope goes from be...

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Q: 17 An object of mass m is lifted a vertical distance h above the surface of Earth at constant speed ...

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Q: | = ??? Battery E = 18 V Lamp R = 3 0 | = ???

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Q: calculate the force of gravity between earth (m=5.972x10^24kg) and the closest satellite (m=4,587kg)...

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Q: billion billion (5x1022) freely moving electrons in a penny repel one another. Why don’t they fly ou...

A: Electrostatic forces. :-  The electrostatic force is defined as an attractive and repulsive force be...

Q: Ã = 2i + j, B = i- 4j + k, and = j+k. What is A· (B x Ĉ), A -10i -j B 10i + j -10 -11

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Q: In the circuit below, the capacitor starts out uncharged. The resistance is R = 118 Ω, capacitance i...

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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –