2. The worker knows that the lower crate has a mass of 50 kg and the upper a mass of 10 kg. She finds that if she pulls with a force of 120 N at an angle of 60° she can keep the crates sliding at a constant speed. Can you use this information to find the coefficient of friction between the lower crate and the floor? If you can, do it. If you can't, explain why not.

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A: Given problem is from projectile motion. Projectile motion : When a particle is projected in the air...

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Q: A truck at a constant speed of 60 m/s covers one revolution around a circular road in 50 seconds. (a...

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Q: Consider Figure 2. Solve for the output voltage if L=10H, C=(1/20)F, and R=20 ohms with initial cond...

A: The voltage equation is V=IR+LdIdt+QC or differentiating we get, Ld2Idt2+RdIdt+IC=0

Q: 1. A drift car racer rides off the edge of a clff. Just at the edge of the cliff, his velocity is ho...

A: Initial velocity (u) = 8.0 ms , in horizontal direction t = 0.6 seconds    

Q: The figure shows two blocks connected by a cord (of negligible mass) that passes over a frictionless...

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Q: a steel train rail is 400 meters long, in march it is -30oC and 40oC in july. what is the change in ...

A: Given data:  Original Length (L0) = 400 m Initial temperature (Ti) = -30 °C Final temperature (Tf) =...

Q: A. Determine the fundamental dimensions of Coulomb's constant k. This constant relates the electrica...

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Q: a stacing com har cwhat distance coer in 12 sec ofter 34*7 ? unifogm acceleration of 8mis? în 12 sec...

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Q: energy of a photon of wavelength 3.65^ * 10^ -6 m .

A: Given data:  Wavelength (λ) = 3.65×10-6 m Required: Energy of the photon 

Q: The sum of vectors D, E and F is a resultant with a magnitude of 24.80 cm pointing 21.34o west of no...

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Q: Identify the three different gaussiaj surfaces.

A: To discuss three different gaussian surfaces.

Q: What is charging by induction and how does it occur? 2. How can the results of charging by inductio...

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Q: what percentage, (vi – vo)/vo, is the top speed of the car increased?

A: Drag force experienced by a vehicle is given by,              FD = - CD A v2 ..........................

Q: Think It Through • How do intervals of constant acceleration appear on an acceleration-time graph? •...

A: 1. How do intervals of constant acceleration is represented on acceleration time graph. In an accele...

Q: A point charge of +5.00 × 10^-6 C is 11.0 cm distant from a second point charge of -2.50 × 10^-6 C. ...

A: “Since you have asked multiple question, we will solve the first question for you. If you want any s...

Q: 5. Static F=25N 10kg

A: Given: The mass of the object is 10 kg. The applied force is 25 N in the vertically upward direction...

Q: containing infinite energy at temperature Th. But you’ve only got a finite cool reservoir, with init...

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Q: The mass of nuclear fuel in a nuclear reactor decreases at the rate of 8 mg every hour. The overall ...

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Q: Part A A point charge qi = 4.10 nC is placed at the origin, and a second point charge q2 = -3.00 nC ...

A: Use the formula of point charges for three charges and put the values and solve.  For net potential ...

Q: capacitor stores energy within the dielectric between the conducting plates in the form of _________...

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Q: Two bars, A and B, each of length 2.3 m and cross-sectional area 1.7 m2, are placed end to end as sh...

A: Equivalent thermal resistance  Req = R1+R2   (series combination)  Req = (L/K1A)+(L/K2A)  Req = (2.3...

Q: Activity 2: Let’s Solve! Equipotential surfaces and their relation to the electric field 3. A spark...

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Q: A person can row a boat at 4.00 mi/h in still water. They need to cross a river that is 1.50 mi wide...

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Q: 8. In the following situations, which objects most likely has a constant speed? A. A vehicle that s...

A:   for constant speed, acceleration =0.

Q: displacement vector is 21 km in length and is directed 60 degrees S of E. Which of the following is ...

A: X component of a vector Ax = A Cos θ  y component of a vector Ay = A sinθ 

Q: Block B in the figure weighs 655 N. The coefficient of static friction between block and table is 0....

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Q: What is the relationship between the buoyancy force, mass of the boat, mass carried of the boat, and...

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Q: A certain battery with potential difference of 2 Volts can deliver 10 Joules of energy, determine th...

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Q: (b) Number Units This answer has no units ° (degrees) Save for Later Attempts: 0 of 3 used Submit An...

A: Tension = T = 1020 N Co efficient of friction = 0.37

Q: 24 0 1. For the circuit shown in the figure on the right, find the current through and the potential...

A: V1 = 12 volts V2 = 3 volts R1 = 3 ohm R2 = 12 ohm R3 = 4 ohm R4 = 5 ohm R5 = 24 ohm   

Q: A pilot is flying a small plane at 56.6 m/s in a circular path with a radius of 188.5 m. The centri...

A: The centripetal force is the radially inward force that balances the radially outward centrifugal fo...

Q: In the circuit of the figure ℰ = 3.30 kV, C = 6.60 μF, R1 = R2 = R3 = 0.740 MΩ. With C completely un...

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Q: Part F During this process, how much work is done on the 20.ON block by the normal force? Express yo...

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Q: Vector a has magnitude 3√2, vector b has magnitude 5. The angle between a and b is 135° and n is the...

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Q: Hardy, an avid JikTeker decided to look at his wristwatch to tell his friend dolphins the current ti...

A: Given:Length of hour hand, h = 6.20 cmlength of minute hand, m = 9.50 cmassumption: hour hand moves ...

Q: In a rectangular coordinate system a positive point charge q = 6.00 - 10-9C is placed at the point z...

A: q = 6×10-9 C position of first charge = (0.150 m , 0 m)position of second charge = (-0.150 m , 0 m) ...

Q: Describe an electric discharge.

A: Electric discharge When electric field is applied When electric field is applied through a medium s...

Q: You have three resistors, each with a resistance of 5 Ω. How would you connect them to obtain (a) ma...

A: Given, three resistance having resistor, R = 5 Ω

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Q: A bird flies the following the displacements below at constant speed and is being chased by a dog, 1...

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Q: Velocity of a particle changes from (3i + 4j) m/s to (6i + 5j) m/s is 2 s. Find magnitude and direct...

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Q: The mass of gun being 50 kg. Then, the velocity of reco A bullet of mass 0.1 kg is fired with a spee...

A: Given  Mass of bullet  m = 0.1 kg  Speed of bullet  u = 100 m/s Mass of gun M = 50 kg To find  Veloc...

Q: In the figure, block A (mass 1.6 kg) slides into block B (mass 2.3 kg), along a frictionless surface...

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Q: 6. A 5.00-kg body accelerates from 3.25 m/s to 9.75 m/s in 3.0 seconds when a force acts upon it. Fi...

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Q: Consider a projectile fired with an initial velocity perpendicular to an incline sloping downward at...

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Q: The ocean floor is underlain by a layer of basalt that constitutes the crust, or uppermost layer, of...

A: Speed of wave (v) = 5.8 kmstime for two way travel (t) = 2.6 seconds Let the thickness = d   

Q: Vector A = 3.0î – 4.0k. (a) Construct a unit vector that 3 %3D is parallel to A. (b) Construct a uni...

A: Given,A→ = 3.0 i^ - 4.0 k^

Q: A single electron accelerates between the cathode and the anode that has a potential difference of 2...

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Q: A satellite with mass m, = 102 kg orbits the Earth at a height of h = 503 km above the Earth's surfa...

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: