A student drops a 8.8kg pumpkin out of a stationary helicopter 550m above the ground. The pumpkin experiences an average drag of 20N for the first 7.2s of the fall, then falls the rest of the way with a constant, terminal speed.

Q: A 29-N block slides down a 23 degrees inclined plane with an initial velocity of 2.6 m/s. Determine…

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Q: How far apart are two identical charges of -6.00 µC if the force between them is 25.0 N?

A: Given, Two identical charges: q1 =q2= -6 μC =-6×10-6 C. F = 25 N. We have to find the separation (r)…

Q: Two people start at the same place and walk around a circular lake in opposite directions. One has…

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Q: An electron is in the n = 5 level of ionized helium. (a) Find the longest wavelength that is emitted…

A: The given data we have: Th element is helium so the value of Z will be: 2 initial level of the…

Q: A chemistry graduate student is designing a pressure vessel for an experiment. The vessel will…

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Q: A laser beam is incident on a 45°-45°-90° prism perpendicular to one of its faces, as shown in the…

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Q: a- We look at a cardboard box from above. The box weighs 28 N. It is on a smooth surface with which…

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Q: A water tank of height h has a small hole at height y. The water is replenished to keep h from…

A: The velocity of water coming out of nozzle is vn and its component in y direction is zero.

Q: 2. A perpendicularly polarized wave impinges from medium 1 (uo, 4%) to medium 2 (μo, 3ɛo). X Medium…

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Q: Please answer subparts d and e. Please show solutions

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Q: Find the resistance of 78.0 m of No. 20 aluminum wire at 20 °C (p = 2.83 x 106 22 cm; A = 2.07 x…

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Q: was just wondering how you got 22 and 62 for t2  in - ht=ut-12gt20

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Q: A tennis ball traveling at a speed v stops after hitting a net. Represent the process with a…

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Q: A projectile is launched from the ground as shown in the figure below with an initial speed of vo =…

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Q: The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used…

A: The average mass of a nucleon in a nucleus is Mn = 1 u = 1.6605 × 10-27 kg

Q: An electron is accelerated by the action of a potential difference of 10 V and subsequently enters a…

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Q: A 64-kg astronaut pushes against the inside back wall of a 2000-kg spaceship and moves towards the…

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Q: An airplane propeller consists if three radial blades, each of length 1.9 m and a mass 5.1 kg. What…

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Q: 4. What is the direction and magnitude of the minimum magnetic field that is required 0.5 g/cm (M =…

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Q: A person stands on a cliff edge and throws a stone vertically upwards at time t = 0. The stone…

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Q: Og block is released from rest after a spring of constant k=800 N/m has been compressed nm.…

A: Given Mass m = 500 g = 0.5 kg Compression in spring x = 200 mm = 0.2 m Spring constant k = 800 N/m…

Q: What is the magnetic flux through the loop?

A: We are given magnetic field its magnitude. We are given a triangular loop. We need to find magnetic…

Q: n the rainy season, the Amazon flows fast and runs deep. In one location, the iver is 24 m deep and…

A: Given, The depth of the river, L=24 m The speed of the river, v=4 m/s The magnetic field of the…

Q: A football is kicked by a football player. It's initial trajectory is at an angle of ø = 50° above…

A: Given thatϕ=50°u=45 ms-1g=9.8 ms-2h=7.5 mwe are asked to tell maximum height reached by the football…

Q: A car rounds an unbanked (level) curve of radius 76 m. If the coefficient of static friction between…

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Q: Part b Calculate the current through resistor R₁. Give your answer in units of milliamperes. Please…

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Q: 5.108 Gina works in a travel- ing funfair. She rides a motorcycle inside a hollow, transparent…

A: The given data we have:  Radius of the circle: 14.2m Mass of Gina: 68.0kg Mass of motorcycle: 40.0kg…

Q: Tank A that is moving at 6 m/s fires at tank B that is stationary. Tank A fires a shell with a…

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Q: Assume that the origin goes through the A particle. The three masses are connected by massless,…

A: Length of each rod (L) = 30 cm mass of A = 450 g mass of B = 200 g mass of C = 150 g

Q: car moves along expressed as: Date : a path S = 4+4 −3+² +8 Where S s is in meters while t in…

A: Given: The equation of the displacement of the object is. s=4t4-3t2+8…

Q: The velocity profile in fully developed laminar flow in a circular pipe of inner radius R = 16 cm,…

A: Introduction: Laminar flow is also considered as streamline flow in which fluid travels in regular…

Q: SS-1 Coherent light of wavelength 675 nm passes through a narrow slit of width 0.0143 mm. The…

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Q: In a half-hour, a 65-kg jogger can generate 8.0x105J of heat. This heat is removed from the body by…

A: Given, mass of the jogger, m = 65 kg heat generated, Q = 8.0 ×105 J

Q: A = 1i - 0.5j, B = 1i +1j, calcuate the dot product of A and B. O A. 0.5 OB. 1.0 O C. 1.5 O D. -0.5

A: Given data: Two vectors A and B A = 1i - 0.5j B = 1i + 1j Required: The dot product of vector A and…

Q: What is the force required to overcome the static friction of a 78kg sled on fresh snow? The…

A: Mass of sled(M) =78 kg Normal force acting on it(N) =Mg=78*9.8=764.4 N Coefficient of static…

Q: T is the period of the cyclotron motion. This is power input because it is a rate of increase of…

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Q: In a nuclear experiment a proton with kinetic energy 8.5 MeV moves in a circular path in a uniform…

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Q: 1. Calculate the work done from x = 0 to x = 7 m by the one-dimensional force depicted in the…

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Q: Ax = .40 m K k= 300 N/m momo 2 kg 25° Theoretical: S x=.25 -h₁=0 Mass is not attached to the spring.…

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Q: 7. The Earth's equatorial bulge leads to a gravitational acceleration of 9.832 m/s² at the North…

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Q: A 5.0-cm-radius conducting loop with a resistance of 4.0 Ω is in the presence of a uniform magnetic…

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Q: An 80-kg person does a bungee-jump from a bridge 100m above a river, using a 30m long bungee cord.…

A: The given data we have: Mass of the person: 80kg Height of the bridge: 100m length of the bungee…

Q: below, a bullet of mass m and speed v is fired at an initially stationary sphere. The bullet goes…

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Q: A proton enters a uniform magnetic field of -0.2 & T with a speed of 3 * 107 î m/s perpendicular to…

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Q: A car with a mass of 1290 kilograms is being driven at 17.9 meters per second when it runs into a…

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Q: 1. A particle of mass 2.5 kg moves under the influence of a force: F(x)=(-5x²+7x) N If its speed at…

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Q: Compare between concave and convex mirror?

A: Concave mirror: The reflective surface of a concave mirror is curled inward and away from the light…

Q: The rotating loop in an AC generator is a square 11.0 cm on a side. It is rotated at 75.0 Hz in a…

A: Given, The side of the rotating loop is square, A = 11 cm = 0.11 m frequency of the rotation, f =…

Q: A cube 5.0 cm on each side is made of a metal alloy. After you drill a cylindrical hole 2.0 cm in…

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Q: If three point masses m₁, m₂, and m3 have position vectors r₁, 2, and r3 respectively, relative to…

A: Introduction: The center of mass of two or more distribution of masses in space is the point where…

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.