Start your trial now! First week only $4.99!*arrow_forward*

Question

A freight train has a mass of 1.4x10^7 kg. if the locomotive can exert a constant pull of 8.3x10^5 N, how long does it take to increase the speed of the train from rest to 78 km/h? min

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: Given that the blocks are accelerating towards the right direction, how do I find the answer?

A: In this case, both block and apply forces are in horizontal direction.Using Newton’s second law, the...

Q: A football punter accelerates a football from rest to a speed of 15 m/s during the time in which his...

A: Given:Initial speed of the ball, u = 0 m/sFinal speed of the ball, v = 15 m/sTime of contact, t = 0....

Q: Hi, in physics I they have The earth's radius is 6.37×106m; it rotates once every 24 hours. I have a...

A: The angle formed between the equator and pole is 90 degrees. The arc ratio will be same as the ratio...

Q: Instructor CE EXERCISES FOR LESSON 5 (3 page total) ht onters the urved side ot a semi-cylindnical d...

A: While entering through the curved part of semi cylindrical dish, the incident angle made by light fr...

Q: Suppose the ski patrol lowers a rescue sled and victim,having a total mass of 90.0 kg, down a 60.0º ...

A: Click to see the answer

Q: mg mgass W 6. A rope pulls a box to the left across a frictionless floor. М шou W grav Wtot AK 7. A ...

A: Consider theta is the angle between force and the displacement and d is displacement.The work done o...

Q: Number 2. I need also the free body diagram for that question.

A: Coefficient of the static friction,The acceleration due to gravity,Radius of the curve road,

Q: In introductory physics laboratories, a typicalCavendish balance for measuring the gravitational con...

A: Given that, the masses of lead spheres are 1.68 kg and 14.4 g, and whose centers are separated by a ...

Q: Constants Periodic Table A typical ten-pound car wheel has a moment of inertia of about 0.35 kg m2. ...

A: Given information:Moment of inertia of the wheel (I) = 0.35 kg.m2Number of revolution (N) = 35 revTi...

Q: 9. A particle is subject to a force F, that varies with position V as shown in Figure P7.9. Find the...

A: Work done is equal to area under force Vs displacement curve.Part A :Work done from x = 0 to x = 5

Q: Concave mirror Experiment object height = 0.60m object distance = 3.00cm Radius of curvature = 4.0...

A: The relation between image distance, object distance and magnification (m) is:

Q: The 10 kg mass has a velocity of 13 m/s at position 1 before coming to rest at position 2 a distance...

A: figure shows the given free body diagram.

Q: A system of point charges include q1= +1HC, at x1-1m, y1= 1m, q2= -1 HC at x2= -1, y2 q3= +2 at the ...

A: Total electric potential at point (1 m, 1 m) is,

Q: Question 12

A: Here, the figure shows the motion of the steel ball at an initial velocity u and with the angle θ.

Q: Physics Question

A: Given information:Weight of the block = wAngle of inclination = θCoefficient of kinetic friction = µ...

Q: Calculate the angular velocity of the Earth in its orbit around the Sun. Express your answer using t...

A: a) The Earth takes 365 days to complete one trip around the Sun that is, 2π radians.Write the formul...

Q: The horizontal and vertical components of the initial velocity of a football are 24 m/s and 7 m/s re...

A: The expression for the magnitude of the initial velocity,

Q: If a piece of an airplane suddenly becomes detached during flight, it will crash to Earth. Would it ...

A: Click to see the answer

Q: Four forces act on an object, given by A = 38.3 N east, B = 30.3 N north, C = 76.7 N west, and ...

A: Draw the vector diagram for the provided system.

Q: A person exerts a horizontal force of 80 N on the end of a door 78 cmwide. What is the magnitude of ...

A: (a) The torque is given by

Q: A rocket has an initial mass of 29,000 kg, of which 20% is the payload. It burns fuel at a rate of 1...

A: (a)Formula for the thrust of the rocket is:

Q: In the figure below a 1.24-kg block is held at rest against a spring with a force constant K 700 N/m...

A: The kinetic energy of the block after crossing the rough patch is

Q: An initially 'un-compressed' spring (x1=0) is observed to compress 0.4 m before stopping and reversi...

A: Click to see the answer

Q: Need help on a review question

A: the work done is equal to the change in kinetic energy,the work done is,

Q: Junior throws his mashed potatoes onto his mother's lazy susan, which has a moment of inertia I. If ...

A: The initial angular momentum of potatoes = mvd,where, m is the mass of the potato, v is the horizont...

Q: What is the period for a simple pendulum of length 2m when loaded with a 3kg mass? When loaded with ...

A: Given,

Q: A rock is thrown from a bridge 19.5 m above water with an initial speed of 17 m/s. Assuming negligib...

A: According to the law of conservation of energy,

Q: In the circuit shown in the figure below R1 = 3.8 Ω, R2 = 6.2 Ω, R3 = 2.9 Ω, I1 = 3.3 A, I2 = 5.1 A ...

A: The figure given below shows the preferred direction of the Kirchhoff’s voltage Law,

Q: Cheetahs have a top speed of 120km/h and can accelerate at a constant rate at 9.5m/s2. How long woul...

A: Given:

Q: One type of gas mixture used in anesthesiology is a 50%/50% mixture (by volume) of nitrous oxide (N2...

A: Consider the gas’s initial temperature be T1, the gas’s initial pressure be P1, the gas’s final temp...

Q: A student pushes a baseball of m = 0.18 kg down onto the top of a vertical spring that has its lower...

A: a)The required speed from conservation of energy is,

Q: A robotic explorer on Mars deploys a simple pendulum that is one meter long. The explorer determines...

A: Click to see the answer

Q: i need help with these two questions!

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...

Q: 12 Two concurrent forces have a maximum resultant of 45 newtons and a minimum resultant of 5.0 newto...

A: Click to see the answer

Q: You pull downward with a force of 30 N on a rope that passes over a disk-shaped pulley of mass 1.5 k...

A: Tension due to Downward pull:

Q: helpppp

A: Hey, since there are multiple questions posted, we will answer first question. If you want any speci...

Q: 4. A charged metal sphere of radius a is surrounded by a conductor of inner radius b. The center sph...

A: (a)From Gauss law, the expression of the electric field between the cavity of the sphere is:

Q: Whitworth Library Course HomeX Join conversation A-Z Databases Book a Flight: Best Pirate Port Publi...

A: Initially the system has only elastic potential energy and finally the system has only kinetic energ...

Q: Pnysics ntals Halliday, Fundame Downloadable eTextbook ORION Gradebook Assignment ent NEXT BACK PRIN...

A: Formula for the induced emf in inductor is:

Q: A 22.4 kg ice skater is moving at 5.35 m/swhen she grabs the loose end of a rope, the opposite end o...

A: The expression for the force is,

Q: What is the magnetic field amplitude of an electromagnetic wave whose electric field amplitude is 12...

A: Given:

Q: Question 13

A: Click to see the answer

Q: For a body moving in the x-direction. In which of the following force vs timediagrams is the impulse...

A: The body Force vs time graph is given for four different situations where the body is moving in the ...

Q: Catching a wave, a 74.6-kg surfer starts with a speed of 1.18 m/s, drops through a height of 1.80 m,...

A: The initial energy of the surfer is

Q: In answering the questions in this problem, assume that the molecules in air (mainly N2 and O2) have...

A: Consider the mass of one mole of air be m, the temperature of air in hot summer be Ts, the temperatu...

Q: How do I solve this for "maximum amplitude of oscillation such that the top block will not slip on t...

A: Figure shows A block with mass M rests on a frictionless surface and is connected to a horizontal sp...

Q: A tensile test specimen has a gage length = 3.0 in and diameter 0.75 in. Yielding occurs at a load o...

A: The cross sectional area of the rod is,Substitute the values,

Q: A bullet of mass m1 = 10.00 g that has a velocity of v1 in the horizontal direction hits and gets fu...

A: Consider the momentum conservation.

Q: Two large forces, F1 and F2 are applied by using two cables to lift a load weighing 1 kg, as shown ...

A: Click to see the answer

Q: Book a FHight: Best X Jein comversahon Course Home A-2 Datalases Whitworth Library Pirate Port | Pub...

A: Part A: As mention in the question the spring and ball system doesn’t make any loss of energy. No ex...