4. A small bulb is rated at 7.5 W when operated at 125 V. Its resistance (in ohms) is ANS = 2100

Q: A 3.0-kg book is held at rest against a wall by a 120 N push force. The coefficient of static fricti...

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Q: 3. A ball thrown vertically upward has a speed of 5.0 m/s at a height of 3.0 m. the mass of the ball...

A: Mechanical energy is the energy possessed by an object due to its motion or its position.   Mechanic...

Q: A 2200-kg auto moving northward at 12.0 m/s runs into a 3800-kg truck which is also moving northward...

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Q: The temperature of the standard stove burner is raised from 300K to 600K. How much more energy does ...

A: The energy radiated from a heat source is given by the Stefan-Boltzmann law. The radiated power is g...

Q: Two identical springs with each one of their ends are fixed to a support and the other are attached ...

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Q: A uniform beam of weight 19 N and length 6.0 m is mounted by a small hinge on a wall at it left end....

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Q: Determine the magnitude of the magnetic flux through the south-facing window of a house in British C...

A: Given field =5.8×10^-5 T Area =5m2 Angle =72° We have to determine the magnitude of the electric flu...

Q: ce cube has a mass of 55 g and is initially at a temperature of 0°C. The ice cube is heated until 48...

A: mass of ice cube (m) = 55 g initial temperature of ice = 0o C mass of water = 48.2 g temperature of ...

Q: A body of temperature 80°F is placed in a room of constant temperature 50°F at time t=0; and at the ...

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Q: In a downtown office building, you notice each of the four sections of a rotating door has a mass of...

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Q: A 1.0 x 10-3 kg spider is hanging vertically by a thread that has a Young’s modulus of 4.5 x 109 N/...

A: Given  mass m= 10-3 kg Young's modulus Y = 4.5 × 109 N/m2 Strain=0.1

Q: driving at 40.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 205 m ahead trave...

A: If collision occur time taken by both must be same and anna car travel 205 m more than van before co...

Q: A small vegetable shop use the following electric appliances: (1) Two Air Conditioner of rating 1600...

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Q: 9. Two charges, q1=4nC, which is located at the y=7cm, and q2=-5nC, which is located at the -x-axis,...

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Q: A 30 ohm resistor and a 60 ohm resistor are connected in a series circuit as shown below. 30.2 60. 2...

A: Given data:  Two resistors are connected in series R1 = 30 Ω R2 = 60 Ω Battery voltage (V) = 12 V Re...

Q: A digital camera's light-sensitive sensor captures light

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Q: Calculate the tension in the cable supporting the beam shown in the figure. If a plant weighing 100 ...

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Q: A yoyo is spined in a horizontal circle 1.5m in radius at a rate of 1 revolution every 2 seconds. Fi...

A: Given: The radius of the horizontal circle is 1.5 m. The number of revolutions is 1. The time interv...

Q: Given the graph below, what can be inferred about the voltage and current in a circuit with an AC so...

A: An AC source is as it name says Alternating Current source. It means that the current varies continu...

Q: 62. (II) Determine the total electrostatic potential energy of a conducting sphere of radius ro that...

A: We have been given a sphere of radius ro having total charge of magnitude Q which is distributed uni...

Q: For I1=5 A, I2=24 A, 13=19 A, V1=5 V and V2=13 V in the shown circuit, If the interconnection is val...

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Q: Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York...

A: The mass of Olaf is M=74.2 kg The mass of the ball is m=0.400 kg The initial velocity of the ball is...

Q: Analyze the following vector system and calculate the magnitude and direction of the resulting vecto...

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Q: • Part A Learning Goal: To understand the origin of the torque on a curent loop due to the magnetic ...

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Q: 3. A force of 2.20N is required to move the upper plate at a constant speed of 31.0 cm/s in the figu...

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Q: 2. A copper wire of diameter 0.86 mm carries a constant current of 0. 18 A to a 40 W bulb. The free-...

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Q: travelling speed pproximately 34 miles per h a zone where the posted sp A car at nstant of 15: a

A: GivenSpeed of car , v=15 m/sPolice car is stationary Initial speed of police car ,u=0Acceleration of...

Q: The diagram below shows a large uniformly charged sheet field line for an electric field. near the s...

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Q: You (70kg) are running westward at a speed of 10m/s has a head-on collision with your crush (45kg) w...

A: Given Mass of man = 70 kg Mass of man's crush = 45 kg Initial speed of man = 10 m/s toward westward ...

Q: A person stands 3.6 m in front of a wall that is covered floor-to-ceiling with a plane mirror. His e...

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Q: *35 A 13.0 g wire of length L = 62.0 cm is suspended by a pair of flexible leads in a uni- form magn...

A: We know that the magnetic force is given as  F = ILB                         ----eq1  where I is  th...

Q: A cart is run along a track to study motion with constant acceleration. In one run, the position-tim...

A: The graph of the x-t curve is a parabola. We first find the equation of the parabolic equation of it...

Q: A mercury barometer at the base of the mountain reads 756 mm. At the same time, another barometer at...

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Q: How can you increase the linear momentum of something? A A. Increase its mass. B B. Increase its vel...

A: According to question we need to define  linear momentum.

Q: n AC circuit has peak voltage 100 - = 50 ohms, L = 0.1 H, C = 20 µF. (b) 1.4 (c) 2.4 (d) 3. %3D 0.4 ...

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Q: Part A A cardinal (Richmondena cardinalis) of mass 4.30x10-2 kg and a baseball of mass 0.146 kg have...

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Q: The index of refraction of a certain medium is 1.5. What is the speed of light in that medium? O 1.0...

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Q: 8. You toss a 52.1 g ball straight up. The ball leaves your hand at 7.53 m/s. How high above your ha...

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Q: 1. A 500.0g plumbob hangs from a string inside of a train car. When the train car accelerates forwar...

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Q: A 1.0 x 10-3 kg spider is hanging vertically by a thread that has a Young’s modulus of 4.5 x 109 N/m...

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Q: A golf club exerts an average horizontal force of 1000N on a 0.045-kg golf ball that is initially at...

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Q: A 60-kilogram student climbs a ladder a vertical distance of 4. 0 meters in 8.0 seconds. Approximate...

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Q: 8. Two point charges, q1=q2=13nC, are located on the x-axis and is 8 meters apart. Assuming that q1 ...

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Q: A capacitor discharges through a 560k2 resistor and draps to its original voltage in 10 min-How many...

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Q: A Toyota Camry has a mass of 1495 kg and is moving due west with a velocity of 4 m/s while a Honda C...

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Q: A flat sheet is in the shape of a rectangle with sides of lengths 0.400 m and 0.600 m. The sheet is ...

A: Given Length l = 0.6 m Breath b =0.4 m Area A = l× b = 0.6 × 0.4 = 0.24 m2 

Q: A phonograph record accelerates from rest to 32.0 rpm in 4.53 s. (a) What is its angular acceleratio...

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Q: An object 10.0 cm in height is placed 37.0 cm in front of a concave mirror of focal length 18.5 cm. ...

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Q: In Figure below, what is the potential difference from point "a" to point "c"? 3 а 4.5m 2m с +30μC -...

A: We have two charges of magnitude q1=-20 uC and q2=30 uC which are at a distance r1a=2 m and r2a=4.5 ...

Q: When comparing the momentum of two moving objects, which of the following is correct? The object wit...

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Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.