An 80-kg man balances the boy on a teeter-totter as shown. Note: Ignore the weight of the board. Solve for the mass of the boy.

Q: A sack slides off the ramp with a velocity of 12 m/s. If the height of the ramp is 6 m from the floo...

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Q: Let's consider an astronaut with a mass of 76.0 kg standing on the Earth. What is the gravitational ...

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Q: A snatcher is running along a straight line with a constant acceleration. He covers a distance of 70...

A: Given data: Distance (d) = 70.0 m Initial velocity (Vi) = 0 m/s Time (t) = 8.00 s Required: Final ve...

Q: A sled is initially at rest at the top of a hill at an elevation 55.0 m higher than the elevation at...

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Q: The mass of a new discovered planet is 6.39 × 10^23kg. If the weight of a spaceship from earth that ...

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Q: A cue ball of mass m1 = 0.32 kg is shot at another billiard ball, with mass m2 = 0.595 kg, which is ...

A: Given : A cue ball of mass, m1 = 0.32 kg Billiard ball of mass, m2 = 0.595 kg Initial velocity of cu...

Q: The 50-kg crate rests on a horizontal surface for which the coefficient of kinetic friction is uk = ...

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Q: The elliptical galaxy NGC 4889 is the largest galaxy in the Coma Cluster (shown in the image below t...

A: Given: The Measured wavelength: λm=401.8 nm The rest wavelength: λr=393.3 nm

Q: A hot water heater in a residential home runs for an average of 3.1 hours per day with a heat energy...

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Q: The work done in shifting a proton between two points parallel along a uniform E field is? positive...

A: The work done in shifting a proton between two points parallel along a uniform E field is?  

Q: A camera lens with a focal length of 250 mm focuses a real image on an image sensor 50 mm behind the...

A: We will evuate the object distance here using lens formula 1/f= 1/v-1/u Also focal length of convex ...

Q: 3. Having a central charge which is 70 nC. Calculate the magnitude of the electric field at the foll...

A: Answer:-  Given  Charge (q) = 70 nc = 70 × 10-9 c  K = (1/4π€o) = 9 × 109 Nm2/c2  Electric field (E)...

Q: Water flows through a pipe system with a velocity of 10 m/s. The initial radius of the pipe is 60 cm...

A: Given initial velocity of water flow  V1=10m/s radius of pipe =60cm pipe is raised by 20m using equa...

Q: 10.0-kg block resting on a horizontal floor is pulled by a horizontal force with magnitude of 70.0 N...

A: If object is on verge of moving  ( not moving ) net force acting must be zero and horizontal as well...

Q: A 1.65 H inductor in an RL circuit (with resistance 1.8 Ω) is initially carrying a current of 4.95 A...

A: Given that:- Inductance of inductor=L=1.65H

Q: 2. Circle and correct the false statements below regarding dielectrics. Justify your corrections. ...

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Q: . You run your 1500 W microwave in your dorm room for 5.0 minutes to heat your TV dinner. What i...

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Q: While looking at her image in a cosmetic mirror, Dina notes that her face is highly magnified when s...

A: The mirror Dina uses is a concave mirror. It is clear from the fact that t the image changes from up...

Q: 4. In the figure below, find T1 and Tz. 5 m T2 3 m 4 m 500 N

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Q: A blade of a ceiling fan has a radius of 0.7 m is rotating about a fixed axis with an initial angula...

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Q: A particle moving in x-y plane has acceleration vector (VE,z) 0. The particle is at rest at time t =...

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Q: A projectile weighing 25 N is fired directly upward and rises to a height of 400 m. (a) What is its ...

A: Weight of the projectile is Fw = 25 N  Height H = 400 m 

Q: In the figure below, a block slides along a track from one level to a higher level after passing thr...

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Q: Given the equation, V – Voe-(2.6x10-3)t, at what time will | %3D oe the voltage drop by its original...

A: According to guidelines we need to solve only first question kindly repost other questions in the ne...

Q: WHY does larmor frequency depend on the external magnetic field strength? I want an explanation of w...

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Q: A trunk with a weight of 250N is at rest on a floor. The coefficients of friction between the trunk ...

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Q: The owner of a coffee shop (named "Local Area Network") proudly hangs a new sign out in front her sh...

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Q: A 0.5 kg stationary ball is struck by a 25 kg mallet and leaves the collision at 22 m/s. If the ball...

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Q: A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 20....

A: Given value--- angular acceleration = 20 rad/s2.  distance = 4.55 m. angular distance = 13 revoluti...

Q: A converging lens (f1 = 11.7 cm) is located 27.0 cm to the left of a diverging lens (f2 = -5.58 cm)....

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Q: A camera is equipped with a lens with a focal length of 30 cm When an object 200 cm away is being ph...

A: Given value--- focal length = 30 cm. object distance = 200 cm . We have to find--- how far from t...

Q: (a) Find the work done by the force on the particle as it moves from x = 0 to x = 2.00 m. (b) Find t...

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Q: gravitation with the Earth as  m2  and the radius of the Earth for the distance F =  GmME RE2. Now a...

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Q: A tennis ball of 0.050 kg was initially pushed down with a velocity of 1.50 m/s from a height of 1.0...

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Q: Three resistors are connected in parallel as shown. A potential difference of 18 V is maintained   ...

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Q: A high-altitude balloon is partially filled with 3 m^3 of helium at sea level. As the balloon ascend...

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Q: A meteorite has a speed of 95.0 m/sm/s when 850 kmkm above the Earth. It is falling vertically (igno...

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Q: For each case below, determine the direction of the magnetic field that would cause the charged part...

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Q: According to Charles Law, if you have a balloon inside a car at noon during a hot summer day the bal...

A: According to Chares Law, at constant pressure, "the volume occupied by a gas is directly proportiona...

Q: How much resistance is needed to draw 3.08 A of current from the battery in the circuit shown in Fig...

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Q: 19. Membrane walls of living cells have surprisingly large electric fields across them due to separa...

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Q: A traveling electromagnetic wave in a vacuum has an electric field amplitude of 92.9 V/m. Calculate ...

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Q: A storage tank 20.0 m deep is filled with water. The top of the tank is open to the air. a. What is ...

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Q: Block B, in the figure below, weighs 100 kg. The coefficient of friction (1) between Block B and the...

A: Given that:- Mass of block B =100kg

Q: 3. A biker weigh 60.0kg, biking at Kalatao diversion road started sliding down from the top of a hil...

A: Given: m =60.0 kgh = 20.0 md = 15m

Q: The faster the molecules move, the lower the temperature. TRUE / FALSE 5. Materials of low thermal c...

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Q: he unstable uranium nuclide 238 92U has a half-life of 4.5 billion years and decays into the thoriu...

A: the rate of decay of a nuclide having N0 number of particles initially is given byN=N0e-λtwhere λ is...

Q: Determine Ib. (beta = 100) 2. Determine Ic. (beta = 100) 3. Determine Vce. (beta = 100)

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Q: A simple single-lens camera (convex lens) is used to photograph a man 1.7 m tall who is standing 3.5...

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Q: 30. A singly charged ion of unknown mass moves in a circle of radius 12.5 cm in a magnetic field of ...

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.