A car and driver of total mass 1350kg are moving at 30 m/s on a horizontal road when the driver sees roadworks 400m ahead. She brakes, decelerating with a constant force of 600N until arriving at the road works. Find the time elapsed before arriving at the road works

Q: Four cables are used to tether a hot-air balloon as shown. The four cables are attached to a hook mo...

A: Unit vectors,AB^=-4i^-5.5j^42+5.52=-0.588 i^-0.808j^AC^=2.5i^-5.5j^+4k^2.52+-5.52+42=0.345i^-0.756j^...

Q: A laser emitting light with a wavelength of 560 nm is directed at a single slit, producing an interf...

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Q: Problem 2: When a 3.75-kg fan, having blades 22.5 cm long, is turned off, its angular speed decrease...

A:

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Q: of determined sides. To get the least reading of ammeter, the slider must be placed at point

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A: The expression for displacement of a body under SHM in the y-direction is Y=Acos(ωt)A is the amplitu...

Q: Find forces and direction acting in points 1,2, and 3.

A: Three charges are given: q1 = -25 C q2 = +35 C q3 = +15 C Distance between the charge q1 and q2 is g...

Q: Gravitational forces are affected by two variable. List these two variable and indicate how they can...

A: Black holes are some of the strangest and most fascinating objects in outer space. They're extremely...

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A: The fraction of the total mass in the vapor phase is defined as quality. Let X denotes quality. The ...

Q: Find the probabilities that a particle can be found between x = 0.45 and 0.55 when the particle in l...

A: The probability of finding a particle when the particle is limited to the x-axis is P=∫x1x2Ψ2dx Here...

Q: A particle of mass 0.195 g carries a charge of -2.50 * 10-8 C. The particle is given an initial hori...

A: Given: The mass of particle is m=0.195 g. The charge of the particle is q=2.50×10-8 C. The initial ...

Q: A heavy boy and a light weight girl are balanced on a massless seesaw. If they both move forward so ...

A: Let's assume weight (mass time gravity) of boy is M and weight of girl is m. Also, initial distance ...

Q: A long, straight wire carries a 13.0 A current. An electron is fired parallel to this wire with a ve...

A: (a) The magnetic field due to the current carrying wire at the path of electron which is 2.00cm away...

Q: In an L-C circuit, L = 85.0 mH and C = 3.20 uF. During the oscillations the maximum current in the i...

A: Concept used: When inductor and capacitor are joined in series, the circuit undergoes oscillations o...

Q: A white light is projected onto a tablecloth. Using the light reflecting off the tablecloth, an obse...

A: The color of an object that one perceive depends on the light that is reflected off of the object. T...

Q: At the center of the sun, the temperature is approximately 107 K and the concentration of electrons ...

A: The Fermi temperature for the electron gas at the center of the Sun is, Here, is the Boltzmann cons...

Q: Dimpho decides to fill hot water bottles to tuck between the sheets at the foot of the beds. If she ...

A: The amount of heat required to change the temperature of the water is given by Q = mcT Where m = mas...

Q: The figure below shows a cross-sectional view of two long, straight, parallel wires that are perpend...

A: Two current carrying wires kept parallel at a distance, d The current carried by the wire is given a...

Q: The yellow light from a sodium vapor lamp seems to be of pure wavelength, but it produces two first-...

A: Given data: The angle is θ1=36.093°. The angle is θ2=36.129°. The number of lines is N=10000 lines/...

Q: A solid sphere and a solid cylinder (both have mass M and radius R) are released from rest at the to...

A: a) We will use conservation of energy in finding the velocity and acceleration of the both the objec...

Q: An object of mass 10 kg is released at point A, slides to the bottom of the incline, then collides w...

A: Part (a) Given: The mass of object is m=10 kg. The distance of spring compressed is x=0.75 m. The v...

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Q: How many years would you have to wait to observe a 18 angular shift in the perihelion of Mercury due...

A: By using Kepler's law of motion and Newton's law of motion we haveF=ma                              ...

Q: An alpha particle (q = 3.2 × 10 ^-19 C) moves in a uniform magnetic field whose magnitude is 1.5 T, ...

A: Given- q = 3.2 * 10-19 C B = 1.5 T v = 5.0 * 104 m/s Part (a) Magnetic force when alpha particle mov...

Q: Imagine a world in which space is two-dimensional, but the laws of physics are otherwise the same. D...

A: Given Imagine a world in which space is two-dimensional, but the laws of physics are otherwise the s...

Q: An observer in frame S' is moving to the right 1+x-direction2 at speed u = 0.600c away from a statio...

A: From relativistic velocity addition, the speed (v) which the observer S measure is given by,