A 0.1-m long nichrome wire has a cross-sectional area of 0.1 mm 2. A 1.0-V potential difference is impressed between its ends which causes a 2.0 A current. Calculate the resistivity of the nichrome wire used.

Q: 2 kg ball is held above the ground with a potential energy of 59 J. At what height is it held? 1 3…

A: Given Mass (m) = 2 kg  Potential energy (U) = 59 J      Let ball is held at height ' h ' .…

Q: (a) What is the initial Potential energy of Tony? 608 J O 124 J O 62J O1823 J

A:

Q: How much power is provided by a motor if it does 27 J of work in 3.0 seconds?

A: Work = W = 27 J Time = t = 3 s Power is defined as the work done per unit time. The mathematical…

Q: Complete Table 3: Using the controls on the simulation, explore the types of images produced as you…

A: Question 15: According to the table, the images formed by a diverging lens are always virtual, erect…

Q: Part A Estimate the wavelength for 1.9-GHz cell phone reception. Express your answer using two…

A: Given data The frequency of phone reception is f=1.9 GHz   The wavelength of the phone reception is…

Q: Give examples of the role of motors in our daily life.

A: Electric motors are extremely important in modern-day life. They are used in vacuum cleaners,…

Q: 115. A 30.0-g ball at the end of a string is swung in a vertical circle with a radius of 25.0 cm.…

A: Given data: The mass of the ball is m=30.0 g=30.0x10-3 kg. The radius of with vertical circle is…

Q: How much work is done by a shopper in pushing her grocery cart by a force of 325 N througl 24.70 m?…

A: We know formula Work = force * displacement   given , force = 325 N ,  displacement =24.70 m Work =…

Q: How much work is done by pulling the box in the figure for distance 20 em F-30 N 60 O 300 N O 3J O O…

A:

Q: Please give the correct answer,Show complete work.

A:

Q: Please show all work and answer all parts

A: Given, Mass of baseball = 0.145 kg initial velocity = 40 m/s i  final velocity = -40 m/s i

Q: velocity v at an angle 85. of 30.° above the horizontal. Projectile B is fired with velocity v at an…

A: 85.

Q: The S.I. unit for Potential Energy is Watt. Select one: O True O False

A:

Q: When you parachute, you hit the ground with the same speed as free falling from a height of 4.5m,…

A: From equation of motion we know that v2= u2+ 2as . During freefall condition using initial velocity…

Q: 6 cm 30 nC 2 cm B

A:

Q: 16. A 170 pound man wants to design a workout (on a treadmill) that will expend 300 kcal. He wants…

A:

Q: uld be. Assume no air resistance and that g-10 N/Ng Calculate, diagram, and label all forces. DON'T…

A:

Q: Base your answers to questions 71 through 75 on the following information. A ball of mass m is…

A:

Q: An electric car can go 150 km on a test track at a constant speed of 100 km/hr on one charge of its…

A: Given data: The distance traveled is d=150 km. The speed of car is v=100 km/hr. The new speed is…

Q: 1. Tom, the cat, is chasing Jerry, the mouse. Jerry runs past Tom at 10.00 m/s. At the same time…

A: Data We have velocity of jerry ,v=10m/s acceleration of tom ,a=3.00m/s2

Q: what distance from the stopping point did he apply his brakes?

A: Given initial speed u = 480 km/h

Q: 17. Which of the following must occur for work to be done on an object? O the object must rotate the…

A:

Q: There are many levers in the human but the most common one is 3rd 2nd 1st

A:

Q: What is speed? Force x distance minus acceleration

A: Answer                    B) The distance an object moves over time Reason

Q: Question 7 A 74 kg man climbs a flight of stairs 12 m high in 30 s. Ho

A:

Q: What is the potential energy of a 2.90-kg object at the bottom of a well 11.8 m deep as measured…

A: Given that: Mass of object is, m=2.9 kg Object is placed at the bottom of the well measured from…

Q: Q₁ = -2.0 C and Q2 = 4.0 C. If Q₁ is at the origin (x = 0.0 m) and Q₂ is at x = 1.0 m, then is the…

A:

Q: Calculate the dot product of the two vectors: A=i+4j-3k and B=j-2k O 10 O11 O 3 O -3

A: vector A = i+4j-3k vector B = j-2k

Q: A 12.0 kg bucket of water is lifted 8.00m from the bottom of a well to the top. How much potential…

A: Given, m=12.0 kg

Q: A 0.95 kilogram object is 145.43 meters above the ground. What is the object's potential energy at…

A: m = 0.95 kg h = 145.43 m

Q: Belly-flop Bemie dives from atop a tall flagpole into a swimming pool below. His potential energy at…

A:

Q: - A metal rod 0.95 m long moves with a speed of 2.4m/s perpen- dicular to a magnetic field. If the…

A: Emf induced between both ends of moving rod in magnetic field is,  ε=vBl Given : Emf induced between…

Q: What is the potential energy of a 2.90-kg object at the bottom of a well 11.8 m deep as measured…

A: Given, the mass of object =2.90 kgheight of well from ground level ( bottom of well) =-11.8 mheight…

Q: 3. A 70 kg package is suspended by two strings as shown below. The angle of the strings with respect…

A: The expression to solve for the net force acting along the vertical direction is as follows:…

Q: The work is done in one second, or one hour, or one year is called the power. True False

A: Explanation :- We know that rate of work done i.e., work done per unit time is termed as power and…

Q: What is the speed of a 14 kN body at rest then falling from a height of 238 m.

A: During free fall if the air resistance is neglected the final velocity of a body dropped from a…

Q: 5m 4 83 ,= +2u C = - 2 u C 83 = + 4u C FIND FORCE ON 81: THE NET

A:

Q: What is the potential energy of an airplane that is only 0.5489 km off the ground and weighs 4120 kg

A: Given that, an airplane that is only 0.5489 km off the ground. That means  Distance, d = 0.5489 km…

Q: A certain handcrank generates power at 75W. How long will it need to be run to fully charge a…

A: Power: The energy per unit time is known as power. Power = Energy/time

Q: Explain the power you expended when running and walking in the stairs

A: Solution:

Q: 3. Consider the hydrogen atom as a small planetary system with the proton playing the role of the…

A: Here, the hydrogen atom is considered to be a system similar to planetary motion with the proton as…