A car travels at the constant speed of 31 mph for 20 mi, at a speed of 40 mph for the next 20 mi, and then travels the final 20 miles at 51 mph. what was the average speed for the trip?

Q: In the figure particle 1 (of charge +7.09 mC), particle 2 (of charge +7.09 mC), and particle 3 (of…

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Q: A piece of cotton and a piece of synthetic rubber are rubbed together, and the cotton is touched…

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Q: Find kinetic energy Mass of ball=3 kg Velocity=2 m/s

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Q: Suppose you have a 300 turn square loop with sides of length 25.0 centimeters. a.) If you want to…

A: Number of turns (N) = 300length of each side of square (d) = 25 cm = 0.25 m Maximum torque (T) = 300…

Q: Problem 1: A person's eyes are h = 1.4 m above the floor as he stands d = 2.6 m away from a vertical…

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Q: A car starts from rest and moves with a constant acceleration of 6m/s² . What is the speed of the…

A: Write the given values the suitable variables. u=0 m/sa=6 m/s2t=4 s Here, u is the initial speed, a…

Q: Determine the minimum coefficient of static friction needed to allow a penny to sit on a rotating…

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Q: You are given a number of 21 0 resistors, each capable of dissipating only 2.0 W without being…

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Q: Write the names of two length units less than a metre. Describe their connection with the metre.

A: Length is a physical quantity. It is one of the fundamental quantities. It's SI unit is metre. It's…

Q: A 200 gram hockey puck is launched up a metal ramp that is inclined at a 45° angle. The coefficients…

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Q: Four pith balls are suspended by insulating threads. The following reactions occur. #2 pith ball is…

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Q: 1. A mars lander may use small rockets to carry cameras on parachutes to a high altitude to survey…

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Q: 1. What is the change in momentum of a 26.3 g bird flying with the speed of 9.25 m/s due east then…

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Q: The wavelength of red helium-neon laser light in air is 632.8 nm. (a) What is its frequency? Hz (b)…

A: (a) The frequency of light is given by, f=c/λ where c=3.00×108 m/s, the speed of light in a vacuum…

Q: 6. From rest, a tennis player swings a club which moves uniformly through 1.25 revolutions in 0.20…

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Q: Name three handy units for measuring length ranging from extremely short to very long. What is their…

A: Name three handy units for measuring length ranging from extremely short to very long. What is their…

Q: A motorcyclist travels along a straight road at a speed of (27 m/ s). When the brakes are applied,…

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Q: A spherical mirror is to be used to form an image 4.00 times the size of an object on a screen…

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Q: 1. Find directions of i) magnetic force FB, i) Magnetic field B at P, i) FB inside the metal plate,…

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Q: How do you decide on a unit of measurement for a physical quantity

A: Unit of a physical quantity is defined as the established standard used for comparison of the given…

Q: An object moves along a straight line with an acceleration of 2 m/s2. If its initial speed is 10…

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Q: . What is the angular momentum of a 0.150 kg object rotating on the end of a string in a circle of…

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Q: Current Attempt in Progress A girl is sledding down a slope that is inclined at 30" with respect to…

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Q: Problem 4: During a snowball fight two balls with respective masses of 1.6 and 0.4 kg are thrown in…

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Q: Which S.I. units are the most fundamental? Identify them with their emblems and provide their full…

A: There are total seven most fundamental units in the S.I. system of units. Those 7 most fundamental…

Q: A patient is being given a chest X-ray. The X-ray beam is turned on for 0.20 s, and its intensity is…

A: Intensity is defined as energy per unit area per unit time. I=EAt

Q: Problem 4: An object with height 1.05 cm is placed a distance 19.5 cm in front of a thin converging…

A: The lens formula: 1di-1do=1f di = distance of the image from the lens. do = distance of the object…

Q: Gbenga needs to get glasses to correct his farsightedness. His eyes currently cannot focus on…

A: Given data: The minimum focus distance is x=63 cm. The focus of normal people is y=25 cm. The…

Q: Problem 9: The rotational inertia of a collapsing spinning star drops from an initial value I= 9 x…

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Q: F3-5. If the mass of cylinder C is 40 kg. determine the mass of cylinder A in order to hold the…

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Q: A straight conductor carrying a current i = 5.6 A splits into identical semicircular arcs as shown…

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Q: If the energy received by 4 m? area in 400 seconds is 2468 KJ. Calculate the value of Solar constant…

A: Given data :                     Time    =     t                    Area     =    A…

Q: d of this wave. (d) Determine the instanta- WA sinusoidal is described by the displacement wave…

A: "Since you have posted a question with multiple sub-parts, as per strict guidelines to us we will…

Q: An 8.0 kg object moving 4.0m/s in positive x direction, has a 1D collision with a 2.0kg object…

A: Dear student When there is no net force or torque on the system, the momentum remains conserved.…

Q: Gbenga needs to get glasses to correct his farsightedness. His eyes currently cannot focus on…

A: (a) Focal length of the lens is +0.378m which is positive so it is converging lens (b) the power of…

Q: Determine the momentum of a car having mass 180 kg moving with a velocity 20 m/s.

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Q: .. QUESTIUNS Use the ammeter and voltmeter reading to find the relative error in power where P-VI…

A: We use error analysis to solve this problem

Q: Hubble's First Attempt. Edwin Hubble's first attempt to measure the universe's expansion rate was…

A: (A)       150  km/s/ Mly  (B)   2.0 × 10 9   year

Q: Two stars M1 and M2 of equal mass make up a binary star system. They move in a circular orbit that…

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Q: When characterizing light or sound waves which wave parameter will be different for light and sound…

A: To identify : The parameter that is different for light and sound waves

Q: Name two length units that are longer than a metre. What is their relationship to the metre?

A: Name two length units that are longer than a metre. What is their relationship to the metre?

Q: A horizontal power line carries a current of 4860 A from south to north. and is inclined downward at…

A: GivenI=4860 AB=50.1 μT=50.1×10-6 Tθ=55°L=130 m

Q: A total resistance of 3.22 Q is to be produced by connecting an unknown resistance to a 12.04 Q…

A: Given Information:- Total resistance Rt=3.22 Ω One resistance is R=12.04 Ω   Required:- Magnitude of…

Q: Draw the following circuit. A 2 cell battery with 2 lamps connected in parallel, a voltmeter…

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Q: Give an example of a derived unit to illustrate its meaning.

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Q: GIke cleite Distames= 15, m. forae = 25 N Caleuduli t ork dona?

A: given data  f=  25N D = 15 m   work done by applied force is  W= force  × distance

Q: Q2: - Radioactive carbon 14 sample contain 2x10"nuclie initially and its half-life is 5730 years,…

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Q: In the figure, a particle moves alonga circle in a region of uniform magnetic field of magnitude B =…

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Q: 2. Use a VIRP Table to analyze the following circuit if the battery has a voltage of 24 V R-50 Ohms…

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Q: Griven Data: mass of bodus Height of hody = Acceleration due fo grovity= gidm/s" * 5m 2. Findl…

A: Given data :                 Mass  of  the  body    =    m                Height  of  body    =…

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 –