A motorist is driving his car at 60 km/hr when he observes that a traffic light 250m ahead turns red. The traffic light is timed to remain red for 20 seconds before it turns green. The motorist wishes to pass the traffic lights without stopping to wait for it to turn green. Make calculations for (a) the speed of the car as it passes the traffic light (in m/s), and (b) the required uniform acceleration of the car (in cm/s 2 ).

Q: A uniform disc of radius R and mass m is connected to a wall by string oflength 2R. The normal react...

A:

Q: I. Akasaki, H. Amano and S. Nakamura w ere awarded the Nobel Prize in Physics in 2014 due to their r...

A: This question is based on property of material.

Q: Problem Solving: Solve the following problems. Give your complete solution and box your final answer...

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

Q: 1. Derive the following expression from the definition of x and e 1(dp) K = T II

A: Isothermal compressibility is defined as κ=-1V∂V∂PT  ......................... (1) The density is de...

Q: entify the ff: 1. It is the ratio of electric potential energy per unit test charge  2. It is the f...

A: 1)             The Electric potential is define is the potential energy per unit charge. Thus       ...

Q: If speed of a wave is 600 m/s, find out its frequency if its wavelength is 100 cm.

A: The wavelength of a wave is given by λ = vf, where v = speed of the wave f = frequency of the wave

Q: A 0.293-kg block resting on a frictionless, horizontal surface is attached to a spring having force ...

A: Since we only answer up to 3 subparts so we will answer the first 3. Please resubmit the another sub...

Q: Q1: In the Figure 1, two forces (P & Q) are acting on the same fixed point A. Find the resultant of ...

A: First Force (P) = 40 N  @35o north of east Second Force (Q) = 60 N @65o north of east   

Q: iven that earth has a radius of 6.4X10^6 m at its equator, what is the linear velocity at earths sur...

A: Given that               The radius of the earth (R) = 6.4×106m Now we have to find the linear veloc...

Q: Boss Skaggs pulls a box of his musical scores along a frictionless horizontal floor.  He pulls in a ...

A:

Q: A cylindrical drum 2 m in radius is held by a rigid bar AB hinged at A and a flexible wire BO. The d...

A:

Q: Ted Nugent connects two boxes of his platinum CDs by a massless cord running over a frictionless and...

A:

Q: For the blackbody radiation, classical theory predicts a. The radiation decreases at large wavelengt...

A: 1)According to Wiens law - (Wavelength)×(Temperature) = constant As the temperature of black body in...

Q: Find the work done to put the 3 charges the vertices of the equilateral triangle

A:

Q: Oxygen has a heat capacity Cp, in cal/(gmole-K), which is a function of absolute temperature T, in K...

A:

Q: A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s. The body starts fro...

A:

Q: Suppose you have a parallel circuit with a battery and 5 resistors. The total of all resistors are 5...

A: We have a battery of voltage say V in parallel with  five resistors of resistance say R. The total r...

Q: An engineer picked two stones, one stone is held in his left hand and the other stone is held in his...

A: Motion of one stone with respect to other is straight line motion.As both are under same gravitation...

Q: 2. Create an illustration of a parallel circuit that connects a battery and five resistors in five b...

A:

Q: Question: A circuit contains a single 12 V battery and 4 resistors. Ri = 20, R2 = 50, R, = 7 0, R. =...

A:

Q: 2. How much work is required to move the charges below from the initial configuration to the final o...

A:

Q: What is the difference between (i) the pressure exerted by water vapour when the air holds the maxim...

A: The pressure exerted by water vapor when the air holds the maximum amount of vapor is called equilib...

Q: Which Of The Following Running Speed Is The Fastest? Student C: 100 In/S Student A: 2 M/S Student D...

A: SI unit of speed is m/s We need to convert all given data into m/s We know 1 inch = 0.0254 m 1 mile ...

Q: A store sign (mass = 93 kg) is suspended from a cable. It is at rest and hangs straight down. Find t...

A:

Q: The ratio circumference/diameter for all circles is p. What is the ratio force/mass for freely falli...

A: Given  Ratio of circumference / diameter for all circle is π . Let ,  diameter of  circle is ' d ' T...

Q: A wire of length 0.863 m carries a current of 25.6 A. In the presence of a 0.693-T magnetic field, t...

A: Write the expression for the magnetic force. Here, B is the magnetic field, I is the current, L is ...

Q: An electron enters a region of space containing a uniform 2.89 × 10-5 T magnetic field. Its speed is...

A:

Q: Use vectors to find the lengths of the diagonals of the parallelogram that has i + j and i – 16j as ...

A:

Q: B = 2.39 kN A = 5.96 kN 29 deg

A: We have two forces given by A=5.96 kN and B=2.39 kN which make an angle θ and 29o with the horizonta...

Q: A. Using a constant 4.5 V source, two bulbs and a single throw switch build – 1. a series circuit. 2...

A:

Q: Determine the unstretched length of spring AC if a force P = 80 lb causes the angle 6 = 60° for equi...

A: GivenP=80 lbAngle,θ=60°Cord ,AB=2 ftk=50 lb/ft

Q: A 2.0 kg mass at the end of a string is moving in a circular path of radius 0.75 m on a horizontal f...

A: Apply the conservation of the angular momentum equation. Here, vi is the initial velocity, ri is th...

Q: x2 /2 (-00,00) (b) е® (0, 2п ) (е) хе * (0,о0) (b) е *(-0,0) (d) cos x (0, 2т)

A:

Q: The three forces represented in the figure shown act on a model of a Space-X rocket while it sits on...

A:

Q: A uniform electric field of 10 N/C passed perpendicualrly through a surface area of -4 2 x 10 * cm´....

A:

Q: The current I flowing rightward through inductor L is at a steady rate of 0.1280 A/s. The magnitude ...

A: GivenThe steady rate of flow of current ,dIdt=0.1280  A/sεL=0.0160 V

Q: show the appropriate figure: A light is to be placed directly above the center of a circular plot of...

A: The diagram is given below. The diagram is given below.   Express the relation for the intensity I ...

Q: An empty truck, which has the mass of 15001500 kg, rolls with a speed of 3.43.4 m/s under a loading ...

A:

Q: 5. Find the total resistance of eight resistors below: R1 = 10 N, R2 = 2 N, R3 = 3 N, R4 = 17 N, Rs ...

A: Given data-                         R1 = 10 Ω, R2 = 2 Ω, R3 = 3 Ω, R4 = 17 Ω, R5 = 20 Ω, R6 = 20 Ω, ...

Q: Problem 6: A uniform wooden meter stick has a mass of m = 763 g. A clamp can be attached to the meas...

A:

Q: What is the gravitational force between a 65 kg and 55 kg person standing 2.50 km apart? O 3.21 x 10...

A:

Q: 20. A 13.0 nC charge is located at x =0 m. Calculate the electric field of that charge at y = 10.0 m...

A:

Q: A 5.1 kg mass sliding on a frictionless surface with speed 6.3 m/s collides with a spring attached t...

A:

Q: If you drop an object, what is its speed at the instant you let go of it?

A: This is an example of free fall motion. During free fall motion initial speed of the object is alway...

Q: John and Phil were playing tennis. They each hit a tennis ball at the same time and measured the how...

A:

Q: Calculate the magnitude of the normal force on a 15.2 kg block in the following circumstances. (Ente...

A: First need to draw free body diagram ( where we have to represent all forces acting on the system)  ...

Q: Two point charges of 3 nC and -4 nC are placed, respectively, at (0, 0, 1 m) and (0,0,2 m) while an ...

A: We know that the force between the two charges is given as  F = kq1q2r2 k is Colomb's constant r is ...

Q: A boat can move at a constant velocity of 1.3 m/s in still water. How long will it take for the boat...

A: Given in question: Distance(d) = 1850m                                  Velocity(v) = 1.3 m/s To fin...

Q: 1. Suppose a spaceship heading straight towards the Earth at 0.750c can shoot a canister at 0.500c r...

A:

Q: acceleration due to gravity. Intuitition: 'g' will lower due to spinning because the ground itself i...

A: For it, the centripetal acceleration should be equal to the acceleration due to gravity. The centrip...

Projectile Motion