A car making a 100 km journey covers the first 50 km. at 40 km/h. How fast must it cover the second 50 km. to have an average speed of 50 km/h for the entire trip? Show your solution

Q: Wael and Arthur observe a puddle of water on the street after a rare rain. They realize there is a…

A: this is question of refraction of light.

Q: Find the x- and y-components of F. Be careful of the signs. In this case Fx and Fy are negative…

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Q: The loaded cab of an elevator has a mass of 3.0 × 10³ kg and moves 210 m up the shaft in 23 s at…

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Q: A man applies a force of 700 N to a crate and pushes it through a distance of 200 cm. Calculate the…

A: Introduction :  In this question we are provided with value of force and distance . with these data…

Q: The 3.1-kN force F is applied at point A. (a) Compute the moment of F about point O, expressing it…

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Q: If speed of light is 10m/s. Find length of a meter stick moving with 9m/s. A. 2.3m B. 1.7m C. 44cm…

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Q: For the system shown start from rest. Neglect all frictional forces, which of the following…

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Q: During an isothermal process, 5.0 J of hat is removed from an ideal gas. What is the change in…

A: Isothermal process : An isothermal process is a process that occurs under constant temperature but…

Q: You have been given the operations below. Do them and display your answers using the correct number…

A: Significant figure rules : In addition or subtraction the final answer is rounded off to the same…

Q: 2. A dog runs 100m away from its master in a straight line in 9.0s, and then runs halfway back in…

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Q: Spring and Constant Force: Explain what happen to the spring when mass is added

A: As is likely evident, not all springs are generated same. And not all spring-mass systems are…

Q: A segment of a conductor in the shape of circular arc carries a current I and is in a uniform…

A: This question is based on moving charges and Magnetism topic. We need to use the formula for force…

Q: i. At a road intersection, a 1200 kg car travelling southward at 18.0 m/s collides with a 975 kg car…

A: We need to calculate the speed and direction of the damaged cars as they move together after…

Q: Three infinite current sheet K₁ = -60 az at x = 7 and K₂ = 20 az at x = 5 and K3 = -10 az at x = 2…

A: this is question  about magnetic field become  of 3 three infinite  current sheet.

Q: Instructions 1. Write your complete solution for each item. It should be handwritten. 2. Make sure…

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Q: Actual Resistance (0) 10 (c) 20 Current (A) Voltage (V) (a) (b) 5 15 (d) (e)

A: (b) = 15 V  (a) = 15/10 A = 1.5 A  use Ohm's law  V = IR

Q: letter A is incorrect

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Q: oh the solutions and the answer are wrong

A: Draw the schematic diagram of the path.

Q: 9.) (Based on Neaman, Problem 4.58) - Determine the Fermi energy level with respect to the valence…

A: Fermi level with respect to valance band energy is  EP-EV =KTln(Nv/P0)  _____(1)…

Q: [2 JA 34.6-mH inductor and 5.78 - resistor, together with a switch, are connected in series to an…

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Q: Spiders may "tune" strands of their webs to give enhanced response at frequencies corresponding to…

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Q: Shown below is a current loop in top view. What is the direction of the magnetic field at the center…

A: Given Current is in clockwise direction  To find  direction of magnetic field at the centre of the…

Q: [5] An air-filled capacitor is composed of large parallel circular plates with a common radius of…

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Q: A steel tape, known to be of standard length at 20°C, is used in laying out a runway 2,500.00 m…

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Q: Rasim and Zhihan are experimenting to determine the speed of sound in m/s in air at 0° C. Assuming…

A: Write the given values with the suitable variables. T=0 °CM=29 g/mol=0.029 kg/mol Here, T is the…

Q: Find Density of object of mass 560 kg which accupies space of 34 m³ ?

A: Introduction :  In this question we are provided with value of  mass and volume . with these data we…

Q: Frequency from a star is observed with an earth-based telescope. The star with frequency fis moving…

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Q: 4) A freely falling marble took 0.45 seconds to travel the distance of 1.00 m. What is the…

A: Apply the second kinematic equation.

Q: You have a different rock with a volume of 30cm3³ and a mass of 60g. What is its density?

A: Given Volume of rock = V = 30 cm3 Mass of rock = 60g We have to calculate the density of the rock.

Q: A wave on a string is reflected from a fixed end. The reflected wave: O is 180- out of phase with…

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Q: Arelyz and Hyeonggyun drop a 378.0-g piece of metal at 100.0°C into 447.0 g of water at 20.0°C. The…

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Q: In the figure here, a ball is thrown up onto a roof, landing 3.90 s later at height h = 20.0 m above…

A: h = 20 m t = 3.90 sec θ = 64o

Q: A motorcycle is being driven around a circular vertical wall 115 ft in diameter. What is the lowest…

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Q: Find the mass of block.

A: Given data;  Block dimensions=2m×0.5m×0.25mDensity=7.8 g cm-3Find mass of the block ?

Q: Find the impulse Force=0.02 N Time=0.24 s

A: Given data : Time=t Force=F   Required : Impulse

Q: A 12.0 V power supply is connected to 4 resistors as shown. What is the potential difference, V4,…

A: R1  = 15 ohm R2 = 10 ohm R3= 25 ohm R4 = 30 ohm V = 12 volts

Q: (3) What similarities and differences do you see from the equivalent resistance and capacitance…

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Q: What is the scalar product of the following vectors? Show your solution A= 3i +5j - 2k  B= - 4i +…

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Q: In the figure, two blocks are connected over a pulley. The mass of block A is 7.40 kg and the…

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Q: 3. A jeepney starts from rest and moves with an acceleration of 0.5 m/s² until it reaches the…

A:

Q: Our sun, currently a yellow dwarf, will eventually evolve to a red giant star and then to a white…

A: Determine the area of the white dwarf.

Q: 3. A narrow beam of light containing red (660 nm) and blue (470 nm) wavelengths travels from air…

A: The beam of light will enter the crown glass from the air. Further, the ray will go into the air…

Q: What is the difference (A - B) of the following vectors? Show your solution A= 3i +5j - 2k  B= -…

A:

Q: 2. A stove has a power rating of 8.00 x10³ W. The energy transferred to a pan of water during a…

A: (2): Given: The power rating is 8x103 W. The transferred energy is 3.25x105 J. The time interval is…

Q: Suppose you have an object attached to a bizarre spring, initially located at x = 0, the equilibrium…

A: Given: An object attached to a bizarre spring located at x = 0. Force of the object = F = Kx We need…

Q: Find Density of object of mass 560 kg which accupies space of 34 m³ ?

A: We know thatd=mvHered=density of objectm=mass of objectv=volume of object

Q: Underwater, you can just barely lift a 75.0 kg rock (density 3.20 g/cm3 ). How massive a rock could…

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Q: What is 7.84 x 10^7 s in units of Ms?

A: The time is given as t=7.84×107 s

Q: You have a different rock with a volume of 30cm³ and a mass of 60g. What is its density?

A: Given data:  Volume (V) = 30 cm3 Mass (m) = 60 g Required: The density (ρ)

Q: wath will be the potential energy of 4 Kg height of 12m. [Take g = 10 m/s² ] mass kept art

A: Write the given values with the suitable variables. m=4 kgh=12 mg=10 m/s2 Here, m is the mass, h is…

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 –