Tell whether each pair of magnets will attract or repel. (

Q: A proton and an a-particle (with their masses in the ratio of 1:4 and charges in the ratio of 1:2)…

A: Radius of a charged particle with chargeq ,mass m moving with velocity v in magnetic field B is…

Q: 6. Steam at 100 °C is bubbled into 2.70 kg of water at 15 °C in a calorimeter cup. How much steam…

A: Given : Amount of steam bubbled to water, m = 2.7 kg = 2700 g Temperature of calorimeter cup at this…

Q: Steam at 100 °C is bubbled into 4.00 kg of water at 15 °C in a calorimeter cup. How much steam will…

A: Let an amount m kg of steam be added. Then heat lost by steam = heat gained by water

Q: Determine the magnitude of the torque exerted about point P by m1 m2 m3

A:

Q: You’ve conducted tensile testing of the aorta and constituent proteins with the results show below.…

A: .

Q: (1a). Black body has emissivity val but in reality, the emissivity of real less than 1. Why??

A: a) We first define the emissivity terms, which help you to understand easily as  Emissivity:- We…

Q: Find the final velocity of car after 1.2 s if car start from rest and value of acceleration is 2…

A: Given data:  Initial velocity (Vi) = 0 m/s Acceleration (a) = 2 m/s2 Time (t) = 1.2 s Required:…

Q: A long, straight solenoid with a radius of rs = 3.0 cm and a length of y = 25 cm is wound with 1,500…

A:

Q: A plane electromagnetic wave, with wavelength 2.9 m, travels in vacuum in the positive direction of…

A:

Q: 1. What is the electric field strength at a distance of 10 cm from a charge of 2 uC? 2. Having a…

A:

Q: A battery with an emf of 9 [V] is connected to a 2 [kΩ] resistor. How  much energy is dissipated in…

A:

Q: The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume…

A: Given  Equation of state for 5g of oxygen  at pressure P and temperature T occupying Volume V.

Q: An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height…

A: Given data :- Power P = 10 kW = 10 × 1000 W = 10000 W mass m = 200 kg height h = 40 m g = 10 ms-2

Q: Calculate the voltage if the resistance is 8.0 ohms and the current is 5.0 A ?

A: Given Data: Resistance, R = 8Ω                     Current, I = 5A Need to Find: Voltage, V = ? Here…

Q: An object has a volume of 4.0 m3 and weighs 40,000 N. What is the buoyant force on the object when…

A: Given: The volume of the object is 4 m3. The weight of the object is 40000 N.

Q: (II) A fisherman's scale stretches 3.6 cm when a 2.4-kg fish hangs from it. (a) What is the spring…

A:

Q: A Ferris wheel has a radius of 30 m and its centre is 32 m above the ground. It rotates once every…

A:

Q: Protons and electrons are ejected from the sun in large quantities. These charge particles, that…

A: .

Q: What is the flow rate of water (in m3/s) hose that can fill 1.75 L bottle in 5 seconds? Group of…

A: Given, Volume of water = 1.75 L = 1.75×10-3 m3 Time = 5s  Flow rate = Volume filledTime taken

Q: Evaluate the surface integral /| (2xzdydz + ydzdx + z?dxdy) where S is a closed surface, given by S:…

A:

Q: A 10 m long uniform board weighing 400 N is supported by ropes at each end. A worker weighing 900 N…

A: Length of board is L = 10 m  Weight of board is Wb = 400 N  Weight of worker is Ww = 900 N .…

Q: that

A: Given, Mass(M)=13 kg. Displacement=65 cm=65/100 m=0.65 m. g=9.8 m/s²

Q: soV 3.0Sh 2.02 4.52 70V

A:

Q: 2. A car with a mass of 2800 kg moves at 15 m/s west and collides with a 3600 kg car travelling at…

A: Given data:  m1 = 2800 kg and m2 = 3600 kg Initial velocity of first car (V1) = 15 m/s, to the West…

Q: A proton (m = 1.67 x 10-27 kg, q = 1.60 x 10-19 C) is moving in a 3.23 x 10-4 T magnetic field in a…

A:

Q: A concrete highway is built of slabs 18.0 m long (at 18 °C). How wide should the expansion cracks be…

A:

Q: A screen is placed a distance d= 42.0 cm to the right of a small object. At what two distances to…

A:

Q: The density of pure iron is 7.874 g/cm3.Apiece of steel made of pure iron an edge length of 4 cm, a…

A: We know that the volume of the rectangular pyramid is given as  V= abh3 where a is the base, b is…

Q: In Figure 22-45, what is the direction of the magnetic force on each charged particle moving with…

A:

Q: Two horses are pulling a barge down a canal, as shown in the diagram. Find the value of the tension…

A:

Q: Suppose the parallel plates each have an area of 2000 cm? and are 1.00 cm apart. We connect the…

A: Given, Potential difference after inserting insulating material = 1.00 kV  Electric field and…

Q: Compute for the range of the projectile Given: initial velocity= 15m/s Angle: 0°…

A: Initial velocity of projectile (u) = 15 msLaunch angle (θ) = 0oTo find : The range of the projectile…

Q: 30° 60° 40° B A A w = 80N W=120 N

A:

Q: A 50-g ball traveling at 30.0 m/s is bounced off a brick wall and rebounds at 20.0 m/s. A high-speed…

A:

Q: An aluminum rod is measured with a steel tape at 25°C. The reading is exactly 1.000 m long.…

A: The following table elaborates the value for the stated conditions (a) Steel tape measure is less…

Q: B. Problem Solving. Use the answer sheet given. Show your complete solution, and encircle final…

A:

Q: A proton and an a-particle (with their masses in the ratio of 1:4 and charges in the ratio of 1:2)…

A:

Q: 2. A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal. The…

A:

Q: Suppose you have a situation where a bowling ball of 5kg collides with a bowling pin of 2.2kg. If…

A:

Q: Which of the following forms of electromagnetic radiation has a frequency of 60 Hz?   a.…

A: Given : Which of the following forms of EMW radiation has a frequency of 60 Hz?

Q: A car is traveling with an initial speed of 80 km/h and accelerates at 0.50 m/s2 along a straight…

A:

Q: A 5.95 mm high firefly sits on the axis of, and 11.7 cm in front of, the thin lens A, whose focal…

A: height of firefly = 5.95 mm object distance (d) from lens A = 11.7 cm focal length of lens A = 5.61…

Q: As shown in the figure, two boxes of mass and are connected by an essentially massless, non-elastic…

A:

Q: Draw two parallel wires carrying currents in opposite directions. (a) Use a right-hand rule to…

A:

Q: Part A A legend says that Archimedes once saved his native town of Syracuse by burning the enemy's…

A: Find the radius of curvature of a mirror that Archimedes could have used to burn ships that were 150…

Q: A 5.00-kg bowling ball moves at 6.00 m/s. How fast must a 2.35-g Ping-Pong ball move so that the two…

A:

Q: A circuit consists of 18 volts battery, a 72 mH inductor and two 50 ohms resistors connected in…

A:

Q: Part A The 2.4 kg, 4.0-cm-diameter disk is rotating as shown in (Figure 1). What is the angular…

A: Given: The mass of the disk is 2.4 kg. The diameter of the disk is 4 cm. The angular speed is 600…

Q: if vector A and vector B are two non zero vectors, then A x B is a. parallel to vector B b.…

A: The cross product of vector A and Vector B.  A×B Is a vector which is perpendicular to Vector A and…

Q: F An applied force of 96 N is applied at a 28° angle. As a result, the box moves 16 m to the right.…

A:

Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.