A 60-kg operator is standing on a spring scale in a 600-kg elevator that is accelerating 6 m/s2 up. (a) What is the scale reading in Newton? (b) What is the tension in the cables?

Q: A 31-kg rock approaches the foot of a hill with a speed of 16.6m/s. The hill slopes upward at a cons...

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Q: Two boxes of fruits moving with constant velocity on a rough surface are connected by a light string...

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Q: Calculate the mass of a car that drives at 12 ·2 m/s and has 30000 of energy ?

A: Given data :                        Velocity    =   V            Kinetic energy     =   K•E         ...

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Q: .Directions of the fields are indicated on field lines. Why are no directions indicated on equipoten...

A: An electric field line is an imaginary line, that gives the direction of the electric field. An elec...

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Q: 40.0kg child standing on a frozen pond throws a 0.500kg stone to the east with a speed of 5.00m/s. N...

A: mass of child = M = 40 kg mass of stone = m = 0.5 kg initial velocity of both = Vi= 0 m/s final velo...

Q: If the brakes on a car give the car a constant negative acceleration of , where k is a positive cons...

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Q: 1 A biconvex lens of 5 cm thickness and index 1.60 has sur- faces of radius 40 cm. If this lens is u...

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Q: In introductory physics laboratories, a typical Cavendish balance for measuring the gravitational co...

A: Given, Mass (M)= 1.20kg Mass(m)= 12g= 0.012 kg Distance between these two masses(d)= 4.90cm= 0.049m ...

Q: It is the limit of the average velocity as the time interval approaches zero. a. Instantaneous veloc...

A: Instanenuous velocity is the average velocity of an object when elapsed time approaches to zero.

Q: •• The intensity of the sunlight striking Earth's upper at- mosphere is 1.37 kW/m². (a) Find the rms...

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Q: A metal blade spins at a constant rate of 5.0 revolutions per second about a pivot through one end o...

A: angular velocity (ω) = 5 revolutions per second Magnetic field (B) = 30 μT Length (L) = 60 cm = 0.6 ...

Q: A 260-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 31° wit...

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Q: 5.4. If a thermometer is taken from a room in which the temperature is 75º into the open, where the ...

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Q: A worker pushes a 30.0-kg crate a distance of 4.5 m along a level floor at a constant velocity by pus...

A: Given value--- mass = 30 kg. distance = 4.5 m. coefficient of friction force = 0.25 . We have to f...

Q: Gloria, a lab technician for an electronics company sets up the circuit shown in the figure. The rea...

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Q: A 3.0-kilogram mass changes speed from 5.0 meters per second to 20 meters per second. What is the ch...

A: As per the guide lines we will solve only first problem. Please upload the other problems separately...

Q: When doing barbell curls, people perceive that it is easier to hold the barbell in a flexed elbow po...

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Q: A stone is thrown vertically upward from the top of a house 112 feet high. If it was thrown at 96 fp...

A: The height of the house is s=112 ft The stone is thrown upward with an initial velocity of u=96 ft/s...

Q: 7. A loop of conducting wire with length L and width W is entering a magnetic field B at velocity v....

A: 7) current in the loop should be such that magnetic field is upward. So, current is counter clockwis...

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Q: hip FHAM ankle knee wteT dLEG wtLEG I5

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Q: An air track glider is attached to a spring, pulled 20.0 cm to the right, & released at t = 0 s. It ...

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Q: 1. If you observe a photon of light with a wavelength A = 495 nm what is its frequency (use equation...

A: Given : Wavelength = 495 nm = 495*10-9 m

Q: Part A A car slows down uniformly from a speed of 27.0 m/s to rest in 8.60 s. How far did it travel ...

A: Given data :- initial speed u = 27 m/s final speed v = 0 m/s time t = 8.60 s

Q: 23. Determine the force, F, required to keep the box from sliding down the plane as shown. 250 kN H ...

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Q: A particles position is defined by the equation s = 4t + 2t + 6 m where t is in seconds. Find the ac...

A: The position of particle is given by : s = 4t2 + 2t + 6 m  

Q: A stone is thrown vertically upward from the top of a house 112 feet high. If it was thrown at 96 fp...

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Q: An arterioie yuui itg is suujell lu a maximum pressure of 81.7 mmHg, once per heartbeat. This pressu...

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Q: Figure 1 A Three blocks, labeled A, B, and C, are connected by essentially massless strings that run...

A: Mass of block A=4.1kg

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Q: A particle travels with velocity v= (8m/s^2) t-7m/s. A.)find the average acceleration for two 1-s in...

A: The acceleration and velocity are related as a = dvdt, where v is the equation of velocity in terms ...

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Q: Two ships of equal mass are 107 m apart. What is the acceleration of either ship due to the gravitat...

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Q: A light ray passes through a glass lens, shown in cross section in the figure below. Find the angle ...

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Q: 1. A cylindrical rod has a radius a and length L, and is made of a ma a resistivity that varies alon...

A: GivenRadius =aLength=Lρ=ρ0 ebx

Q: In laboratory experiment, a 0.50-kg block resting on a table is pulled by the force F (as shown in t...

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Q: Use the exact values you enter to make later calculations. A ray of light strikes a flat, 2.00-cm-th...

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Q: A concave mirror (f1 = 13.8 cm) and a convex mirror (f2 = −5.50 cm) are facing each other and are se...

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Q: The figure below shows a cylinder of radius 20 cm and mass 10 kg. The cylinder is pulled up by a mas...

A: Given that:- Mass of block=20kg

Q: A truck with 28-in.-diameter wheels is traveling at 45 miles per hour. How many revolutions per minu...

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Q: part 1 of 1 10 points Four blocks are on a frictionless horizontal surface. The bocks are connected ...

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Q: (a)Calculate the equivalent resistance (in Ω) between points a and b.  Ω (b)If a voltage of 41.0 V i...

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Q: What would you observe if you made the slit separation very very large (assuming you still had a coh...

A: In the single-slit diffraction experiment, we can observe the bending phenomenon of light or diffrac...

Q: A tetherball of mass 3 kg is suspended from a rope of length 5.0 m and travels a circle of radius 3....

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Q: The brakes on a sedan gives a constant negative acceleration of 2km/s2 where k is a + constant. What...

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Q: At t = 0 s a particle located at the origin has a speed of 42 m/s at an angle 0 = 45°. At t = 3.0 s ...

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Q: A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping th...

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