A battery supplies a constant current of I = 15 mA to the circuit of a flashlight with a resistance of R = 4.1 kΩ.   a.) Input an expression for the potential difference across the terminals of the battery, ΔV.  b.) What is this potential difference in volts?  c.) Keeping the resistance the same, if the flashlight battery has a potential difference of ΔV = 7.5 V, how much current flows through the circuit, in amperes?

Q: A 55.0 g tennis ball was hit by a racket at an angle of 34.9° above the horizontal and travel a…

A:

Q: 1. What is the momentum of a 1.4x104 kg autombile traveling at 20m/s to the right of its origin?…

A:

Q: An AC voltage of the form v(t) = 100 sin 1000t, where v(t) is in volts and t is in seconds, is…

A:

Q: 1. A 2- kg box is lifted 1 m from the floor to a table top and then to a shelf 1 m above the table.…

A:

Q: A vehicle is travelling along concave road then along convex road of same radius of curvatures at…

A:

Q: A lawn mower is pushed a distance of 200 ft along a horizontal path by a constant force of 45 lb.…

A: Distance (d) = 200 ft Force (F) = 45 lb Angle (θ) = 30 degree

Q: Consider a single loop of wire that carries current I = 1.5 A. If the field due to the current in…

A:

Q: The car has a initial velocity is 6 m/s and the final velocity of the object at the time t = 3sec is…

A: Acceleration : it is the change in Velocity over the change in time. Unit of acceleration is m/s2. a…

Q: In giving a patient a blood transfusion, the bottle is set up so that the level of blood is 1-3 m…

A:

Q: A 1,200 watt motor bike can move at a maximum speed of 30 m/s. How much force does the motor exert?

A: Data provided:  Power (P) = 1,200 watt Speed (v) = 30 m/s Unknown: Force (F)

Q: Consider the current-carrying wire shown in the figure. The current creates a magnetic field at the…

A:

Q: An object hangs from a spring balance.The balance registers 34 N in air, 25 N when this object is…

A: The density of the other liquid is 555.5 kg/m³

Q: Consider the following. (a) Find the angle (theta) locating the first minimum in the Fraunhofer…

A:

Q: A wave with a wavelength of 0.9 m moves down a rope at a frequency of 7 Hz. What is the speed of the…

A: Wavelength=0.9 m Frequency =7 Hz We know, speed=wavelength ×frequency             =0.9×7 m/s…

Q: a) what is the equation for the wave? b) what is the maximum acceleration point on the string?

A:

Q: (c) A tennis ball is thrown upwards with sufficient speed to reach a height of 12 m. (i) What is the…

A:

Q: Please help! Required Info: Two strings, each 18.3 m long, are stretched side-by-side. One string…

A:

Q: an approach thats being investigated to mitigate the thermalizat

A: Photovoltaic (PV) modules are renowned for their reliability. However, some modules degrade or even…

Q: A horizontal aluminum rod 3.9 cm in diameter projects 7.1 cm from a wall. A 1200 kg object is…

A:

Q: You note that your prescription for new eyeglasses is –4.25 D. What will their focal length, f, be…

A: Focal length When  lens is focusing at infinity, at that time focal length of lens is calculated.…

Q: An ambulance with a siren emitting a whine at 1590 Hz overtakes and passes a cyclist pedaling a bike…

A:

Q: A deep-sea fisherman hooks a big fish that swims away from the boat, pulling the fishing line from…

A: Given data as per question  t    =   2s angular acceleration  =  110rad/s2

Q: Q/calculate the electron for velocity in the second orbit the hydrogen atom?

A: Given, Electron is in second orbit of hydrogen atom

Q: A 2.60 kg block hangs from a spring. A 390 g body hung below the block stretches the spring 2.20 cm…

A:

Q: wavelength

A: Answers

Q: In scuba diving, a regulator is used so that the pressure of the air the diver breathes is close to…

A:

Q: What is the momentum of a 15-g sparrow flying with an initial speed of 12 m/s to the east? If the…

A: Momentum of an object is given by the equation p=mvm is the massv is the velocity Momentum is a…

Q: Calculate the Forces on each support of the beam. 600 m 200 m 100 m 4,500 kg 500 kg 2,400 kg 5,000…

A: We have three boxes of masses m1=4500 kg, m2=500 kg and m3=2400 kg at positions r1=200 m, r2=600 m…

Q: nite sheets carrying currents are parallel to each other in xy plane, eL, also both carry charge K =…

A: We know that  We have given that the two infinite sheets carrying the current are parallel to each…

Q: 3. A current-carrying wire placed in a magnetic field will be deflected by a force that is…

A:

Q: 1. A hollow sphere of inner radius 6.0 cm and outer radius 7.0 cm floats half-submerged in a liquid…

A:

Q: A 7.5 kg object travelling at 5.0 m/s [right] collides with a stationary 5.0 kg object. If the…

A:

Q: Why are wavelengths 0.5~2.5Å normally used for diffraction analysis?

A: Step1 - Here, we will understand the diffraction.               When the waves travelling in any…

Q: If the x and y components of a particle's velocity are vy = 32t m/s and vy = 8 m/s, determine the…

A: Given data :- x component velocity dx/dt = vx = 32.t m/s y component velocity dy/dt = vy = 8 m/s…

Q: 39 – 40. What is the angle of reflection in mirror 2 if the angle of incidence in mirrorI which is…

A:

Q: Two thin slits separated by 0.14 mm are illuminated by a monochromatic plane wave, producing…

A:

Q: 2 A2 hp air-conditioning unit is designed to operate on 220-V. What must be the resistance of the…

A:

Q: (c) A stone is thrown horizontally off a 25 m high building. It hits the ground a distance of 20 m…

A: Height of building, h = 25 m Horizontal distance, x = 20 m Initial velocity of the stone, v = ?

Q: A spherical.cavity is made inside a sphere of density, d. If its centre lies at a distance l, from…

A:

Q: 1. A potential difference of 38 V is applied to the two resistors of 5.3 Q and 4.9 Q connected in…

A: First Resistance ( R1 ) =  5.3 ohm  Second resistance ( R2 ) = 4.9 ohm  Potential difference ( V ) =…

Q: What is friction? What are the different types of friction? Give two examples for each type.

A: Given: What is friction? What are the different types of friction? Give two examples for each type.

Q: A beam of light traveling through a liquid (of index of refraction n1 = 1.3) is incident on a…

A:

Q: Given the circuit, compute for: 1. equivalent resistance of the circuit 2. total current on the…

A:

Q: Camera flashes charge a capacitor to high voltage by switching the current through an inductor on…

A:

Q: The earth's magnetic field, with a magnetic dipole moment of 8.0×1022Am2, is generated by currents…

A:

Q: The newtons gravitational force equation is given as, F = GM, M2 %3D where G is constant and x is…

A:

Q: A tricycle moving at a constant speed of 11.3 m/s approaches towards a jeep that is initially at…

A:

Q: After a plant or animal dies, its 14C content decreases with a half-life of 5730 years. If an…

A:

Q: 27 – 28. What area of the coil is needed to achieved a flux of 2.0 Wb over a magnetic field strength…

A: The magnetic flux (Φ) linked with a surface held in a magnetic field (B) is defined as the number of…

Q: A single, air-filled, capacitor is connected to a battery. The capacitor is fully charged and…

A: