A 60.0−kg ice skater moving in the +x -direction collides elastically with an 87.5−kg skater initially at rest. Find the velocities of the two skaters after the collision.

Q: 20. A box moves up a slope while being pushed in the direction shown. If there is friction between…

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Q: The position vector of a 2.5 kg particle is given by r=4.0 i +3.0 fĵ, where r is in meters and t is…

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Q: 4. A truck starts from rest and move a constant accelerati on of 7 m/s². Find its the distance after…

A: Given: The initial speed of the truck is 0 m/s. The acceleration of the truck is 7 m/s2. The time…

Q: An artery in the left thigh has a diameter of 7 mm and carries blood at a rate of 10 ml per second.…

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Q: High-frequency sound waves (ultrasound) are used to probe the interior of the body, much as x rays…

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Q: Blood is accelerated from rest to 12.5 cm/s in a distance of 0.3125 cm by the left ventricle of the…

A: To calculate the acceleration, use the equation of motion: v2=u2+2aS, where v is the final velocity,…

Q: A spring 1.50 m long with force constant 471 N/m is hung from the ceiling of an elevator, and a…

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Q: 20. A box moves up a slope while being pushed in the direction shown. If there is friction between…

A: Force of friction between block & slope depends on coefficient of static friction & angle of…

Q: An electron has a momentum with magnitude four times the magnitude of its classical momentum. (a)…

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Q: 20. A box moves up a slope while being pushed in the direction shown. If there is friction between…

A: Let the mass of the block be m, and the external force be F.let the coefficient of kinetic friction…

Q: 42 kg child sits on a bathroom scale while riding a Ferris wheel. The child has a stopwatch and…

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Q: A virtual image is formed 24.5 cm from a concave mirror having a radius of curvature of 30.0 cm. (a)…

A: Given v=24.5 cm      R=30 cmf=R/2=15 cm and since mirror is concave , f=-15 cm the formula we will…

Q: A concave mirror has a radius of curvature of 16.0 cm. An object is placed 4.00 cm in front of the…

A: A concave mirror has a radius of curvature of 16.0 cm. According to cartesian system , focal length…

Q: 2. Find M so blocks move at a constant speed. Fn 2 kg μ=0.2 M ≤F=

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Q: A sorting arm in a UPS distribution center impacts a package at a velocity of 110 in/s. What drop…

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Q: A 0.1000-kg marble is fired by a boy from a slingshot at point A, at a height of 1.500 m from the…

A: The initial velocity of the marble in horizontal direction is vAx=vA cos 45o      = 20×cos 45o…

Q: D Question 1 Two lenses are placed a distance of 20.0 cm apart. The leftmost lens is a converging…

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Q: voltage V = 20 cos (@t) volt with @= 2000 rad/s the amplitude of the current will be nearest to (a)…

A: Current is the rate at which electrons flow past a point in a complete electrical circuit. Here, we…

Q: What is the velocity of a 500kg elevator that has 4000J of energy?

A: Given data:  Mass (m) = 500 kg Kinetic Energy (KE) = 4000 J Required: The velocity (v)

Q: The magnitude of the cross product between two vectors, one of which has magnitude 2 and another has…

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Q: Determine the orbital speed, in m/s, of a satellite that circles the Earth with a period of 1.70 x…

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Q: 7. A vertically polarized beam of light of intensity 100 W/m² passes through two ideal polarizers.…

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Q: 2. A 2kg ball moving at 8m/s to the right overtakes a 8kg ball which is moving at 3m/s to the right.…

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Q: A 250 g handball moving at 5.00 m/s strikes a wall at an angle of 35.0° relative to the wall and…

A: Momentum: momentum is the result of a particle's mass and velocity. Being a vector quantity,…

Q: The mass of Venus is 81.5%% that of the earth, and its radius is 94.9%% that of the earth. Compute…

A: Let the mass of earth = M Let the radius of the earth = R The mass of the venus = 0.815 M The radius…

Q: 99⁹: A charge is placed in a uniform electric field E5x10'i N /C. Through what potential difference…

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Q: 0.25 kg mass is attached to a vertical spring. Suppose the spring has a force constant of 10 N/m and…

A: mass (m) =0.25 kg k = 10 Nm

Q: The figure below shows a 100 kg block being released from rest from a height of 1.6 m. It then takes…

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Q: Monochromatic light with wavelength 512 nm is incident on a slit with width 0.0317 mm. The distance…

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Q: A hockey puck is traveling to the left with a velocity of 2-m/s when it is struck by a hockey stick…

A: Momentum= mass × velocity = mv  Momentum is a vector quantity so it has both magnitude and velocity

Q: infrared photon has a frequency of 8.3 E12 Hz. What is the energy of this photon, expressed in meV…

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Q: The provided image shows the steps to find the ray transfer matrix for a thick biconvex lens (n=1.5)…

A: The formula to calculate the focal length of the given lens is  1f=n2n1-n11R1-1R2 where f is the…

Q: A student made an Arrhenius graph of Ln(k1/k2) versus 1/T (K-1). However she erroneously plotted 1/T…

A: Given: graph of lnk1/k2 versus 1T k-1 Y=-0.000084x-0.047 To Find: The value of the slope and plotted…

Q: You are riding an elevator. The elevator has a built-in scale so that you can measure your weight…

A: When the lift is moving with constant velocity, then the lift will have no acceleration. The lift's…

Q: A 110V circut is connected to 3 parallel resistitive loads. The resistances of the loads are: 34…

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Q: Find the theoretical Debye temperature of copper (Cu) if the speed of sound in copper is 3901 m/s…

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Q: What instrument will we use to find the mass of objects? 11. What would be the mass of the object…

A: The mass of an object is defined as the amount of matter present in it. Mass is also defined as the…

Q: Spring potential energy depends on... (select all that apply) how fast the mass travels as it's…

A: Potential energy is defined as the energy possessed by a body by virtue of its position.

Q: man stands on a platform that is rotating (without friction) with an angular speed of 0.339 rev/s;…

A: According to conservation of angular momentum If no external torque is applied to system it's…

Q: Suppose a 975-kg car can produce a useful power output of 45.5 hp (1 hp = 746 W).  (a) How long, in…

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Q: a www A block with mass m -6.2 kg is hung from a vertical spring. When the mass hangs in…

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Q: 20. The graph below repres between distance and time of travel for an object moving in a straight…

A: 20)  At t=1.5 s Distance D=2.5 m So instantaneous velocity is v=D/t=2.5/1.5=1.67 m/s   21) Given…

Q: The mirror of a solar cooker focuses the Sun's rays on a point 22.3 cm in front of the mirror. What…

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Q: An electric motor converted 700 W of electrical input into The speed was 1750 RPM. Find the kg-m of…

A: Options are inappropriate,In this question, the required answers are driven torque and motor…

Q: Calculate the kinetic energy of a truck that has a mass of 2900kg and is moving at 55m/s.

A: As per the answering guideline we solve only first problem. Please upload the other problem…

Q: The graph shows the xx component of a force that acts on an object that moves on the xx axis. The…

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Q: 10. An automobile is sitting on a hill which is 20 m higher than ground level. Find the mass of the…

A: Given: Potential energy = 362600 J  Height = 20 m

Q: Find the resistance of 78.0 m of No. 20 aluminum wire at 20 °C (p = 2.83 x 1062 cm; A = 2.07 x 10-²…

A: Given data: The length of the aluminum wire, l=78.0 m. The resistivity of aluminum at 20 °C,…

Q: orce ?→=(−6.8N)?̂ +(5.2N)?̂F→=(-6.8N)î+(5.2N)ĵ acts on a particle with position vector ?→=(3.0m)?̂…

A: Given: The applied force is -6.8i+5.2j N. The position vector of the object is 3i+3.9j m.

Q: In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is…

A: Given,The cue ball is travelling east wardThe mass, m, of both balls = 162 gThe initial velocity of…