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.

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Q: 5 A sled is initially at rest at the top of a hill at an elevation 55.0 m higher than the elevation ...

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Q: At some instant and location, the electric field associated with an electromagnetic wave in vacuum h...

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Q: 17. A sinusoidal current has a mean value of 15.0A. determine its maximum and rms values. A. 23.55 ...

A: Given Mean value current or average current = 15.0 A We have to determine its maximum and rms values...

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Q: Starting from the origin of some coordinate system, a chicken moves 2 m to the +x-direction for 2 s,...

A: Given: The chicken moves 2 m to the +x-direction for 2 s. The chicken moves 3 m to the +y-direction ...

Q: Answer all questions in the space provided. Box only your answers. Keep all work as organized as pos...

A: Given data The density of the water is given as ρwater =1000 kg/m3. The atmospheric pressure is giv...

Q: Consider the circuit below. We have C1 = 10 pF, C2 = 20 pF, C3 = 30 pF, and V = 6.0 V. Answer the qu...

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

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Q: Questions Q1. Find the volume of the solid that is obtained when the region enclosed by the curves y...

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Q: What would the separation between two identical objects, one carrying 1 C of positive charge and the...

A: Given Charges of the two particles are given as q1=+1 C and q2=-1 C. Electric force between the char...

Q: At what parts of the swing of a pendulum does it have (a) its greatest potential energy; (b) its gre...

A: Given that:- Simple pendulum performing SHM.

Q: What direction does the magnetic force point? y↑ - q X V A) +x direction D) -x direction B) +y direc...

A: Given: The direction of the magnetic field is in +y-direction. The direction of the velocity of the ...

Q: Which one of the following wavelengths will provide the best angular resolution? 674 nm 568 nm 596 n...

A: angular resolution is given by ∆θ=1.22λDwhere λ is wavelengthd is diameter of telescope so we see th...

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

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Q: All three objects have a net charge. Objects Z and Y attract one another. Objects Y and X also attra...

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Q: What happen to the potential energy if you doubled the distance, if a +2 nC charge moves from ∞ to p...

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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: A 1-kg body moving forward at 5m/s hits a second body at rest. After the collision the 1-kg body rev...

A: Given Information:- Mass of the two bodies is  Initial speed of 1kg body is v1i=+5 m/s Initial speed...

Q: Car A and a Police Car both chasing Car B. Car A started from rest with an acceleration a = (0.24t2 ...

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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: Consider the circuit shown in the figure below. (Assume R, = 10.5 N, R, = 1.55 N, and V = 6.80 V.) R...

A: G)) Emf of the battery connected=6.80 volt.  Voltage dropped calculated along R2 resistor=2.86 volt....

Q: A concave mirror has a radius of curvature of 15 cm. An object is placed 20 cm from the mirror. Clas...

A: The radius of curvature of the concave mirror, R=15 cm , so the focal length of this concave mirror ...

Q: A segment of wire with length L is carrying a current I. The wire is oriented 30° above the horizont...

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Q: The steel I beam in the drawing has a weight of 8.00 kN and is being lifted at constant velocity. Wh...

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Q: A life raft of cross – sectional area 2.0 m x 3.0 m has its top edge 0.36 m above the waterline when...

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Q: A particle moves according to the parametric equations x 19 and y = 21?, where t is in seconds and x...

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Q: organ wove with lhen two pipes ploy ey produce a new souna together, he beat freg 01. The shor ter p...

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Q: A block of mass m = 2kg slides across a flat surface with friction present. If the block starts with...

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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: Two manned satellites approaching one another at a relative speed of 0.400 m/s intend to dock. The f...

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Q: Determine the magnitude of the resultant and its direction angle from x, y, and z axis for the follo...

A: Given: F1 = 465+6 = 471 lbr1=(4,5,3)F2=2060/10 = 206lbr2= (-6,4,-5)F3=300 lbr3=(6,-2,-4)

Q: A ray of light hits a mirror and bounces off. If the angle of incidence is 69.6°. What is the angle ...

A: Angle of incidence is i  = 69.6 o 

Q: if a hydraulic system has a cylinder containing fluid trapped between two pistons with equal diamete...

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Q: 2. Using a 1 meter long slinky that is anchored at only one end, what is the frequency for the 1st m...

A: We know that the relation between the   frequency and wavelength and velocity is given as ' c = fλf=...

Q: Calculate the buoyant force on a rock of mass 32 kg and unit weight of 27468 N/m^3 when fully submer...

A: Given that:- Mass of rock=m=32kg

Q: A radian is all of the following EXCEPT   A dimensionless quantity   The ratio of

A: Radian is dimensionless quantity. Radian is ratio of arc length over radius. The unit of angular pos...

Q: 3.13If a 200 N force F, is applied to the piston with the 4 cm di- ameter, what is the magnitude of ...

A: Given that:F1=200 Nd1=4 cm=0.04 md2=10 cm=0.1m∆h=2 m

Q: A 90-gram pendulum swings in a clock and a pendulum swings on a 3-meter-long string attached to a pi...

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Q: LOCATING IMAGES IN A PLANE MIRROR Part A - Drawing an Image Point Object First Ray 1. Draw an incide...

A: Ques: Draw a image point

Q: A hot water heater in a residential home runs for an average of 2.2 hours per day with a heat energy...

A: Given : Average running time of hot water heater = 2.2 hrs. per day = 2.2 * 60 * 60 = 7920 s Heat en...

Q: How much work must be done to stop a 925 kg car traveling at 95 km/h?

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Q: A certain force gives an object of mass m, an acceleration of 12.0 m/s? and an object of mass m2 an ...

A: Given for mass m1, acceleration (a1)= 12 m/s² Given for mass m2, acceleration (a2)= 3.3 m/s² We know...

Q: 6 m 6 m 8 kg m kg 8 kg nooth pulley are 12 m apart at the same horizontal level. A light inextensibl...

A: Given: m1=m2=8kgL=20mD=12 m

Q: The mass of a 3.0-kg object is measured when the object is completely submerged in water. The readin...

A: Given: The mass of the object is 3 kg. The apparent mass inside the liquid is 2.6 kg.  

Q: Write down the equation to calculate the torque if the magnitude of a force and the lever arm are gi...

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Q: 8. A 2500 kg van accelerates down an icy driveway, going from rest to 30.0 m/s in 6.00 s. During its...

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Q: A microscope has a magnification of M1. If the objective is replaced with one that has a magnificati...

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Q: compute the mass of the earth knowing that the moon orbits the earth every 29.5 days and is 386400 ...

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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.