 Lv 1120 points

# Basharat Ali

• ### A person lays down on a platform suspended far above the ground. ?

They hold a 7.25kg ball In their hand off the edge of the platform. A bungee cord connects that ball with the platform's edge, as shown in the attached picture.

A bungee cord Is like a big rubber band, and you can treat it like a regular spring In this problem. The bungee cord has a spring constant of 56N/m and would be 3.3 meters long if you just laid it on the ground. If the person releases the ball from rest, figure out the ball's acceleration at the instant the ball is at the lowest point It will reach in this scenario.

• ### A bimetallic strip is made of copper and steel fused together.?

The length of each piece is 75 cm at 25 celsius and the thickness of the copper is 0.16 mm and the steel is 0.28 mm.a) if the temperature of the strip goes from 25 t0 85 celsius, what is the subtended angle of the arc that the strip makes?

• ### A chamber is filled with 8.2 x 10^6 carbon dioxide molecules and warmed to a temperature of 350 Kelvin. ?

What is Vp and Nv at the Vp speed (its maximum value)?

Physics5 months ago

• ### Use stoke’s theorem to calculate the work done by the force F = (2y, xz, x+y) on a particle moving counterclockwise around the curve?

Use stoke’s theorem to calculate the work done by the force F = (2y, xz, x+y) on a particle moving counterclockwise around the curve of intersection of the plane z-y= 2 and the cylinder x^2 + y^2 = 1

Mathematics5 months ago
• ### A rod of length 16 meters an charge 1.5 mC lies along the x-axis from (-8,0) to (8,0) meters. A charge of 0.4 mC is placed at (0,1) meters.?

What will be the electric force on 0.4 mC charge if the rod has a linear charge density given by λ=kx^6?

Physics5 months ago
• ### A 100 m long wire carrying a current of 0.3 A out of the board is at [-4,0] meters.?

Another 100 m long wire carrying a current of 0.7 A into the board is at [+7,0] meters. What is the magnitude and the direction of the total magnetic field at [1,3] meters?

Physics5 months ago
• ### A charge of -3 mC is at the origin and a charge of +3 mC is at R= (-4i-3j+7k) mm and they are bonded together. ?

The mass of each charge is 3.5 nkg. There is an electric field in the region equal to E= +5i+2j-3k mN/C. What is the velocity of the charges by the time the dipole is lined up with the electric field? What is the magnitude of the torque on this dipole due to the electric field?

• ### A rod of length 16 meters an charge 1.5 mC lies along the x-axis from (-8,0) to (8,0) meters. A charge of 0.4 mC is placed at (0,1) meters.?

Find the potential energy of these two charges if the rod has a linear charge density given by λ=kx^6? What will be the electric force on 0.4 mC charge if the rod has the same linear charge density?

• ### Two point charges lie along the x-axis. Charge 1, q1 = e, lies at x = 0 m and charge 2, q2 = −e, lies at x = 3 m, where e = 1.6 × 10^−19 C.?

Point vP is 4 m along the y-axis (i.e. at x = 0, y = 4 m).

i. Determine the electric field at point P

ii. Determine the electric potential at point P. You may take the usual

convention that the electric potential goes to zero at infinity

Physics5 months ago
• ### An ideal inductor, a resistor and a capacitor with adjustable capacitance are connected in series to a source of alternating voltage (50 Hz?

The current through the circuit when the capacitance of the capacitor is set

to C1 = 100 µF is the same as when the capacitance of the capacitor is set to

to C2 = 200 µF. Find out the inductance of the inductor.

Physics5 months ago
• ### Here’s the figure/blueprint of the circuit. Each consumers obstacle is 30 Ω, ammeter obstacle is irrelevant(very small).?

Electromotive force source’s internal resistance/obstacle is 10 Ω, electromotive force is 9V(volts)

a) Calculate the circuits outer parts obstacle and the current which goes through ammeter

b)Calculate the voltage between P and Q, calculate the current through both branches.

c)Calculate the power for each consumer/person

d) Calculate electromotive force source efficiency factor

• ### "Person throws a rock vertically up to the sky from 20 meter tower. The starting speed of the rock is 30m/s. Air resistance is neglected.?

a) Calculate the maximum altitude of the rock and the time that it takes to get the max altitude before starting to fall down.

b)Calculate the time starting from throwing the rock and ending with reaching the ground.(The whole time of throwing the rock, including falling down). Calculate the final speed of the rock when its going to hit the ground.

c)Calculate the rocks total summary mechanical energy while throwing the rock, at max altitude, at the moment when it hits the ground."

• ### A box weighing 200 kg on a horizontal floor. Someone pull the box so that during the first two seconds the box reaches a speed of 1 m / s.?

Traction is constant. Friction between floor and the box is 0.8. Find

a) box path length during those 2 seconds and the traction applied to the box.

b)Determine the work by traction, average power while moving and frictional force work.

c) Determine the traction instantaneous power at the start and at the end of the moving."