A race car travels around a track at a maximum speed of 250 km/hr. The track has a total circular distance of 5 km. In one hour, what is the maximum number of times the car can go around the track?

Q: A pacemaker has an RC circuit that control the time of voltage giving out.  A suitable time constant...

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Q: An x-ray tube for radiography is at 80 kV.  It generates (heat) power of 30 kW.  The effective total...

A: Given: Power (P) = 30 kW Voltage (V) = 80 kV

Q: A ray of light leaves air (n = 1) and enters glass (n = 1.5). Once inside the glass, the light is at...

A: Given data:  Index of refraction of air (n1) = 1 Index of refraction of glass (n2) = 1.5 Angle of re...

Q: What is the resistance of a 3.9 m  length of copper wire 1.3  mm  in diameter? The resistivity of co...

A: The resistance of a wire is given by,              R = ρlA Here,      ρ is the resiticvity of the wi...

Q: The electron in the following figure is at a speed of 22 m/s through a magnetic field with a strengt...

A: Given: The speed of the electron is 22 m/s. The strength of the magnetic field is 1 T.  

Q: Problem 1 A motorcyclist wants to perform the “Wall of Death” stunt. In this stunt, the rider will d...

A: A) Four forces will act on the motorcycle:- W= mg= weight of the motorcycle N= normal reaction on th...

Q: Angle D = 23 degrees Solve for the magnitude of the resultant of the two forces.

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Q: A man runs at a constant 4m/s for 40s and then runs @ 8m/s back to his starting position. A. Total t...

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Q: Three equal charges of +3C are arranged in a straight line in the sequence of Q1, Q2 and Q3. The dis...

A: Given:charge on each charge is equal, Q1= Q2 = Q3 = +3 Cdistance between Q1 and Q2 is, r12 = 0.75 mA...

Q: To generate a wide spectrum of colours, colour ink-jet printers use what kind of ink? Do they appear...

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Q: A 0.0150-2 ammeter is placed in series with a 9.50-N resistor in a circuit. Calculate the resistance...

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Q: Describe charging by conduction and induction using the given diagram below

A: Most objects are electrically neutral i.e they have an equal number of positive and negative charges...

Q: The body of a snorkeler swimming in salt water has a resistance of about 585 2. If the snorkeler is ...

A: Given data:  Voltage (V) = 5.00×102 V Resistance (R) = 585 Ω Required: Current (I) and Power (P)

Q: engine shut down; the jet is assumed in free fall. Romanoff deploys a jet pack 7s after leaVing the ...

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Q: If a man ran @ 3m/s for 10s and then -3m/s for 10s more.... A.What is the distance traveled? B. Aver...

A: Concept Scalar and vector quantities. Scalar quatities are independent of direction whereas the vect...

Q: Identical point charges Q are placed at each of the four corners of a 3.0 m x 4.0 m rectangle. If Q ...

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Q: An African swallow carrying a very small coconut is flying horizontally with a speed of 18.0 m/s. ...

A: Given:  Initial Horizontal speed(vx)= 18.0 m/s  Initial Vertical speed(vy)= 0 m/s Vertical Displacem...

Q: 10. A rifle fires a bullet with speed of 800 m/s into a giant slab of butter weighs 8 kg on a fricti...

A: Given data: initial speed of bullet u = 800 m/s weight of bullet m = 40 g initial speed of butter sl...

Q: On a sunny day, a person's eye has a diameter of 0.00220 m. Two objects are 48.4 m from the eye. Usi...

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Q: Ball x of mass 1.0 kg and ball Y of mass 0.5 kg travel toward each other on a horizontal surface. Bo...

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Q: A bowl of apples is resting on a table. The bowl is not moving (it is not accelerating) even though ...

A: Newton's Third law states that every action has an equal and opposite reaction . In simple words, Fo...

Q: Bonita is again pulling a cart to the right. The cart used to be tied to a wall but now the rope has...

A: We know that Bonita is again pulling a cart to the right.We  Assume that the only forces on the cart...

Q: Activity 2 - Law of Charges Describe what charge is on each object and the law of electric charge is...

A: The electric force for charges at rest, according to Coulomb, has the following properties: Charges ...

Q: If it is 2 PM right now, what time was it 150 hours ago?

A: Current time = 2 PM To find: Time before 150 hrs=?

Q: 38. When a 5-kilogram mass is lifted from the ground to a height of 10 meters, the gravitational pot...

A: when the object from its initial position is lifted by height h on earth then the gravitational pote...

Q: Solve for the weight component (N), work done by applied force (J), and work done by weight componen...

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Q: We compress the spring in the above system by 0.5 meters. Assume that the spring constant, k = 1,000...

A: (a) Express the relation for the initial potential energy stored in the spring. PEi=12kx2=12×1000 N/...

Q: 1. What is the potential at point c? explain your answer. A. -400 V у (m) B. -350 V 1.0- (-200 V 0.5...

A: The Equipotential lines diagram shows the different lines along which there is fixed electric potent...

Q: An archer fish spies a meal of a grasshopper sitting on a long stalk of grass at the edge of the pon...

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Q: . The magnitude of the flux is maximum when ____________. a. when the angle of tilt is 45 degrees. ...

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Q: The rocket is at height of 150 km above the Earth. Thus, the distance r in which is measured from th...

A: Given that:- Height of rocket from earth surface=150km

Q: A spring (k = 75 N/m) has an equilibrium length of 1.00 meter. The spring is compressed to a length ...

A: at highest point the spring energy will be converted into potential energy hence 12k∆x2=mghh=k2mg∆x2...

Q: A particle travels along a straight-line path y = 0.7x. If the x component of the particle's velocit...

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Q: If the steel disk has a mass of 200 kg, a radius of 2 meters, and a smooth low-friction bearing at ...

A: mass = 200 kg radius = 2 m force = 100 N   

Q: On planet #5, a stone dropped from a height of 64.3 m above the ground will hit the ground at a spee...

A: The answer is below

Q: An area of 15.5 m? on the surface of a spherical shell is crossed by 10 µC of flux in outward direct...

A: Area of the surface A=15.5 m2, flux density through the surface ϕ=10, charged enclosed by the shell ...

Q: Vhat is the net force acting on Q1 if the charges are as -500 nanocoulomb; Q3 = 750 nanocoulomb. The...

A: We know that we have three charges that are  Q1= 500nC ,Q2= -500 nC and Q3= 750 nC  The distance bet...

Q: 10.000 3.0 m's 8000 Z 6000 Cart A 4000 2000 0.000s 0.0010 0.0015 Cart A with a mass of 2.0 kg travel...

A: Mass of cart A m1=2 kg, initial velocity of cart A u1=3 m/s, mass of cart B m2=1.5 kg at rest initia...

Q: Scale: 1 cm = 1 km 1 cm 5 km 2 km 3 km 4. Label your roadmap properly, including names of the roads,...

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Q: Constants Two resistors of resistance R, = 3.00 N and R6 = 3.00 N are added to the network, and an a...

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Q: 1. When you lift a book from the ground to your desk, what kind of work do you do, negative or posit...

A: The energy stored in the object due to its position above the ground or reference level, the energy ...

Q: A concave mirror has a focal length of 5 cm. an object is 15 cm away from the mirror and the object ...

A: Given value--- focal length = 5 cm. Object distance = 15 cm. Object height = 9 cm. We have to find...

Q: Which of the following describes an oscillating system? A.The relationship of period and frequency i...

A: Here we will discuss the oscillating system.

Q: A person is standing on the side of a road when a car approaches them at 50 m/s while honking their ...

A: Given,  Speed of car=50 m/s Frequency of horn =600 Hz. Speed of sound =343 m/s We have to find the a...

Q: 2. A 3500-lb car travels down the 10-degree inclined road at V = 20ft/s. If the driver steps on the ...

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Q: For plane progressive waves of height 6 m and length 200 m in deep water, find: a. the phase velocit...

A: In this question we have to answer questions related to plane progressive waves. Please give positiv...

Q: 1. Charging by conduction negative Before negative During Aegative After nevtral electrons move nega...

A: In the first figure the ebonite rod has negative charge and the electroscope is electrically neutral...

Q: After turning off a DVD player, the disc slows from 27.5 rad/s to stop at a constant rate of 10 rad/...

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Q: 6. A potential difference of 9 V is maintained across a conductor in a circuit. If the conductor has...

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Q: A positive charge of 4.0μC exerts an attractive force of 8N on an unknown charge 20 cm away. The unk...

A: Data Given ,  Positive charge ( q1 ) = 4 μC = 4 × 10-6 C Force  ( F ) = 8 N Distance between the cha...