1. What force is necessary to accelerate a 30,000 lbs railway electric car at the rate of 1.25 ft/s², if the force required to overcome the frictional resistance force is 400 lbs?*

Q: A large crate with mass mm rests on a horizontal floor. The static and kinetic coefficients of…

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Q: What is the acceleration produced by a force of 420 N exerted on an object of mass 44 kg.

A: Given  Force (F) = 420 N   Mass (m )= 44 kg     We know, Force = mass × acceleration       F = m × a…

Q: A grocery cart is pulled along a rough horizontal surface of 6.0 N. It moves through a distance of…

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Q: Explain the work you had done when running and walking in the stairs

A: Work done is defined as the product of the displacement (d) and the force acted in the direction of…

Q: 23) Complete the statement. "The angle of elevation and the angle of depression of two given objects…

A: The angle of depression is an angle between the horizontal line and the observation of the object…

Q: Q1) Are the following statements true or false? 1. An electric dipole consists of two charges Q,…

A: A magnetic field is a vector area that  narrate  about  the attraction  impact  on mobile  electric…

Q: The 10-lb and 20-lb bodies are approaching each other with the velocities shown in figure. If…

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Q: Part A Which of the following are SI units for electrical current? Select all that apply. ampere per…

A: The electric current is the flow of ions or electrons traveling through the electric conductor.

Q: Find the energy (in eV) of a photon with a frequency of 1.5 x 1016 Hz. eV Need Help? Read It

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Q: The line of action of the 5340-lb force runs through the points A and B as shown in the figure.…

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Q: Water floats on a liquid called carbon tetrachloride. The two liquids do not mix. A light ray…

A: Given : Angle of incident  (i) = 45° Angle of refraction (r) = 40.1°  index of refraction of water…

Q: It was 20 Q2: Find the values of current and potential difference on the resistance R4 shown in the…

A: Steps to calculate resistance and current through 4 ohms resistance using thevenin's method 1.…

Q: Two rods and one cable are attached to the supports at O. If two of the forces are as shown,…

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Q: Given data: Density = 350 kg / m3 Mass = 24.4 kg Find the volume ?

A: The answer for this question is given below...

Q: How much energy does it take to drive a 200 Hp car at 20 % power for 3 hours if it is 12 %…

A: Given Power rating of car = 200 Hp = 200 × 746 W Output run power is only 20% of rated power time =…

Q: 9. Two bolls with a masses m and 2m are connected by a rod of negligible mass. The rod can be…

A: Torque is defined as Torque, τ =Iα ,  Where I is moment  of inertia and α is angular accelerationIf…

Q: 17. A car starts from rest and has a constant acceleration of 3.0 m/s². Find the average velocity…

A: Given, initial speed of the car, u = 0 ms moving with constant acceleration, a = 3.0 ms2 time…

Q: A 31.4 kg woman stands on a bathroom scale while riding an elevator. Determine the reading on the…

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Q: Find the wavelength of a second wave that has a frequency of 210 Hz and a wave speed of 14000 m/s.

A: Given data:  Frequency (f) = 210 Hz Wave speed (v) = 14000 m/s Required: The wavelength (λ)

Q: Which of the following represents a negative acceleration? Select all apply. An object is at rest An…

A: Negative acceleration decreases the speed of object .   Therefore , correct options are :- An…

Q: How much radiation is a person working in a nuclear-related occupation allowed to be exposed to in a…

A: The radiation from the nuclear related occupation is very hazardous for health as well as nature.

Q: A charge of 5 C flows through any cross section of a conductor in 10 seconds. What is the current…

A: Introduction :  In this question we are provided with value of time taken and charge flowing.with…

Q: Find the distance covered by car Speed=33 m/s Time=3 s

A: Given: The speed of the car is 33 m/s. The time interval is 3 s.

Q: What is the speed of a ray of light traveling through a substance having an absolute index of…

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Q: Find the electrical energy consumed in Joules if a toaster of 40 W is used 1200 seconds ?

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Q: 21) What is the height of the building to the nearest thousandths? O A. 200 m OC. 0.003 m O D.…

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Q: An object is launched at a velocity of 25 m/s in a direction making an angle of 20° upward with the…

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Q: 2. Airplane A is flying directly toward the airport which is 20 miles away. The pilot notice…

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Q: Problem 4.32 The figure shows a block (mass mA) on a smooth horizontal surface, connected by a thin…

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Q: A 6-kg body moving at a velocity of 8 m/s collides with another 7 kg body of mass moving at a…

A: mass of first body = 6 kg Initial velocity of first body = 8 m/s mass of second body = 7 kg Initial…

Q: 28. In simple rectilinear motion a 100 Kg mass is given a constant acceleration of 2.0 m/s². Find…

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Q: Two individuals are attempting to relocate a sofa by applying forces in the indicated directions. If…

A: Given  F1=680 N F2=430 N Required resultant force (R)

Q: what is the coefficient of friction between the box and the include?

A: The solution provided is correct The friction force is 60N  Friction force is defined as F =μN  Here…

Q: -/6 Points] DETAILS Dr. Knotts also needs help getting boxes into the moving truck. You push a box…

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Q: A body does 36 Joules of work in 5 seconds. What is it's power?

A: Introduction :   In this question we are provided with value of  work done and time taken. with…

Q: 2) A disk of radius 0.1 m is oriented with its normal unit vector n at 30° to a uniform electric…

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Q: Find impulse Force=7.21 N Time=0.05 s

A: Given data : Time=t Force=F   Required : Impulse

Q: Given data: Area 5 m2 Force = 360 N Calculate the pressure? ||

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Q: Given data: Mass=34 kg Acceleration=2.3 m/s2 Find force

A: Given data : Acceleration=a Mass=m   Required : Force

Q: veled at a speed of 72 km/h for 7 h. Find the distance the bus covered. The bus covered a distance…

A: Given data : Speed=S Time=t   Required : Distance

Q: A ball toy of mass 22.7 g is thrown straight up with an initial speed of 2.8 m/s. Neglect air…

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Q: What is background absorption and background correction. How does the use of a continuum light…

A: If part of the radiation is absorbed by molecules or lost owing to scattering, a higher gross…

Q: 24) All of the scenarios illustrate angle of depression EXCEPT A. A hot air balloon and the stack on…

A: The angle of depression is the angle between the horizontal line and the observation of the object…

Q: Find the electrical energy consumed in Joules if a toaster of 40 W is used 1200 seconds ?

A: Introduction :  In this question we are provided with value of power and time . with these data we…

Q: A ball is thrown vertically upward from the ground and a student gazing out of the window sees it…

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Q: [6.] A 20 kg box resting on a horizontal, frictionless surface is attached to a 8 kg weight by a…

A: Visualize the problem:

Q: X 18. Mr. Kustusch exerts a force upon a 3.9-kg pile of snow to both lift it 0/2 and set it into…

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Q: The voltage in circuit is 25 V and resistance is 4 ohms, calculate the current ?

A: Introduction :  In this question we are provided with value of voltage and resistance . with these…

Q: 20. A baseball player throws a baseball upward with an initial velocity of 40 ft/s and plans to…

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Q: The two structural members, one of which is in tension and the other in compression, exert the…

A: We have two forces F1=4.2 kN which makes an angle of 63o with the +x axis directed inwards and…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!