Which is true about the force acting on a roller?*   A. There are horizontal and vertical forces in the positive direction. B. There is only one vertical force acting upward. C. There are horizontal and vertical forces in the negative direction. D. There is only one vertical force acting downward.

Q: Consider the circuit shown on the right. Rank the brightness of the bulbs in the circuit. Use the…

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Q: How does angle θ affect the value of coefficient of friction?

A: Relation between θ and coefficient of friction:

Q: Vector A points to the north and has length A. Vector B points to the east and has length B = 2.0A.…

A: Vector A points to the north and has length A. Vector B points to the east and has length B = 2.0A.…

Q: Vector A has magnitude 9.0 m and is directed east. Vector B has magnitude 8.0 m and is directed…

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Q: Immediately after the switch closes, the current in the circuit is 1 ΜΩ + 45 V 3 µF

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Q: A projectile fired downward from a height of 112 ft reaches the ground 2 seconds. What is the…

A: Given data as per question h  =  112ft t  =  2s

Q: Which of the following statements is true? a. The bodies interacting exerts equal gravitational…

A: Required : True statement.

Q: Problem 2: The 300 metric tonne jet airliner has four engines, each of which produces a nearly…

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Q: scientist looks through a microscope With two thin lenses with mị 40. What is the overall…

A: Magnification of multiple lens is find by the product of each and every lens magnification. M=m1×m2…

Q: A particle is moving in a straight line according to the position function s(1) = r - 612 +9t +5,…

A: We have st=t3-6t2+9t+5vt=ddtst=3t2-12t+9at=6t-12

Q: An object with a mass of m = 5 kg is attached to the free end of a light string wrapped around a…

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Q: m x = 2.5 m – (6.0) - (60")+(30):² m t +(3.0 t2 s². The object is at rest at t = 1 s. The object is…

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Q: What is the force of gravitational attraction between the earth (m = 5.98 x10^24 kg) and a 70-kg…

A: Mass of the earth, m1= 5.98×1024kg Mass of the student, m2= 70 kg Distance between the center of the…

Q: a liquid has a density of 1000 kg/m^3, an object has density of 3650kg/m^3 and a cylinder has a…

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Q: light ray from air is incident to the surface of water ( n=1.33) at an angle of 30°. If the light…

A: Given Refractive index of glass = 1.73 Refractive index of water = 1.33 Angle of incidence =300

Q: 4. For a concave (divergent) mirror with a radius of curvature of 5 cm, place a 3 cm object in front…

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Q: Fill in the table for this circuit. Show your work and then check your answer with PhET V R R1 R2 R3…

A: Three different resistor are given. We need to fill the table

Q: student kicks a football vertically upwards with a speed of 20.0m/s. Determine all unknowns and…

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Q: An electric circuit has a battery with an EMF of 1.50 V. Its positive terminal is connected to its…

A: Given data: emf V = 1.50 V Radius r = 0.500 m Resistivity ρ=1.80×10-8 Ω-m Density for copper…

Q: 5.0 m 3.0 m

A: Given data as per question  sign weight = 400N beam weight = 600N

Q: What is the Celsius temperature of the hot reservoir of a Carnot engine that is 32% efficient and…

A: Given  Efficiency of Carnot engine , E = 32% = 0.32  Temperature of cold reservoir , Tc = 20°C…

Q: Which of the following term refers to the union of terrestrial and cosmic laws? a. Aristotelian laws…

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Q: The spherical gas tank is fabricated by bolting together two hemispherical thin shells of thickness…

A: The relationship between pressure and force is given by P=FA Where F is a force and A is cross…

Q: Which of the following statements is correct? I. It is possible for an object to have motion in the…

A: To identify : the correct statement

Q: A cyclotron with radius 0.35 m and a uniform 0.14-T magnetic field can accelerate alpha particles to…

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Q: In a rectangular coordinate system, consider the charges 1 = -4µC at (5, 7) cm 92 = 6µC at (-1, 5)…

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Q: Of the following quantities, the two that are vectors in character are  ________.     electric…

A: VECTORS : Those having magnitude as well as direction and also those quantity which follows vector…

Q: A vector has a magnitude of 10.1 units, and a direction of 44.40 above the positive x axis. What are…

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Q: The force applied to the handle of the rigid lever arm causes the arm to rotate clockwise through an…

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Q: Common Properties of Light Consider a slab made of three different materials X, Y, and Z. Light in…

A: To identify : the correct relationship among the speeds of light in each material

Q: A 0.155kg baseball moving at 24m/s strikes the glove of a catcher. The glove recoils(moves back) a…

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Q: During an intense volleyball game match, Denden tosses the ball straight up in the air. Which of the…

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Q: Two 50 µF capacitors are connected in series across a 100 V battery. The potential difference…

A: Given Two capacitors of capacitance = 50 µF  These two capacitors are connected in series across a…

Q: A person is reading a newspaper held 40cm from their eyes. The print is 1.5mm high. Assuming that…

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Q: Find the valur of force applied if work done is 190 J and displacement is 16 m.

A: Given data:  Work (W) = 190 J Displacement (d) = 16 m Required: The force (F)

Q: In a certain arrangement, a proton does not get deflected while moving through a magnetic field…

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Q: The time constant for this circuit is 1 MQ 45 V 3 µF +

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Q: You have two waves heading towards one another and they momentarily pass through each other,…

A: Given: amplitude of each wave, a = 2.5 cm Waves are travelling in opposite direction and suffer…

Q: (a) What current is needed to transmit 250 MW of power at 400 kV? (b) What is the power dissipated…

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Q: A swimming pool has a length of 10 m and width of 5m. When the pool is filled to a depth of 1 meters…

A: The pressure(P) at any point on the bottom is the same = hdg.d = density = 1000kg/m^3P = 1*1000*9.8

Q: A 200-m length of copper wire has a resistance of 2.0 ohms. Its cross-sectional area is?

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Q: In the figure, what is the equivalent resistance (Reg) in 2 between terminals A and B? R1 in R3 R7 A…

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Q: 39. A wave on a very long rope takes 2.0 s to travel 10 m of the rope. If the wavelength of the wave…

A: Part (39): Given: The wavelength of the wave is 2.5 m. The distance traveled by the wave is 10 m in…

Q: 2. Three capacitors where connected in series. Two values are known: 4mF and 5mF. While the third is…

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Q: A crate is pushed a distance of 15 meters. If it is pushed with a force equivalent to 4x + 10…

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Q: This time we have a non-rotating space station in the shape of a long thin uniform rod of mass 8.40…

A: Consider the given data as below. Mass of rod, Mrod=8.40×106 kg Length of rod, Rrod=1137 m Small…

Q: car with a mass of 1200kg is moving at speed of 19m/s The driver hits a parked van. The car comes…

A: Given-  Mass , m = 1200 kg  Initial speed , u = 19 m/s  Final speed , v = 0 m/s  Distance travelled…

Q: 112. A conductor is moved perpendicularly through magnetic field B as represented in the diagram…

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Q: (II) Monochromatic light falls on two very narrow slits 0.048 mm apart. Successive fringes on a…

A: Given: The distance between slits is 0.048 mm. The distance of the screen from the source is 6 m.…

Q: A rubber ball thrown vertically upward from the top of a tall building has an initial velocity of 22…

A: initial velocity (u) = 22 ms

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”