Physics Answers

Find the electric flux in a sphere of radius 0.48 cm from a charge of 60 nC

Ana and Kristoff had a romantic date in the jungle. Kristoff, in one tree, sights Ana in another tree. Trying to impress Ana, Kristoff grabs the end of a vine with a length of 20.3m that makes an angle of 45° with the vertical, steps off his tree limb, and swings down and then up to Ana's open arms. When he arrives, his vine makes an angle of 30° with the vertical. Determine whether he gives her a tender embrace or knocks her off her limb by calculating Kristoff's speed just before he reaches Ana. You can ignore air resistance and the mass of the vine.

Jamylla and Janylla are on a hike. Both hikers begin a trip by walking, the first leg A: 2.65 km, 140° from their base camp, on their second leg B: 4.77 km, 252° and to complete their final leg C: 3.18 km, 332°. What is the magnitude and direction of their final position from their base camp? Apply polygon method and component method and compare their results.

Calculate the energy stored in a 5uf capacitor charge to 30 V

Three vehicles A,B and C are moving a long straight line in space in the same direction the objectives is for vehicle C to dock with vehicle B, if  east and  east how long is is it to docking if the vehicles B and C are 100,000 meter a parts.

Find the energy transferred in 1 h by conduction through a concrete wall 2 m high, 3.65 m long, and 0.20 m thick if one side of the wall is held at 20∘C and the other side is at 5∘C.

A 100 nC charge is placed at the origin. A -50 nC charge is placed at x= 5 cm and a 200 nC is placed at x= -10 cm.

b. What is the net electrostatic force acting on 200nC charge?

1. A voltage of 12 V is placed on a capacitor with C = 85 pF. (a) What is the charge on the capacitor? (b) How much energy is stored in the capacitor?

2. In open-heart surgery, a much smaller amount of energy will defibrillate the heart. (a) What voltage is applied to the 7 F capacitor of a heart defibrillator that stores 60.0 J of energy? (b) Find the amount of stored charge.

3. Calculate the energy stored in a 5 μF capacitor charged to 30 V.

3. A series combination of two uncharged capacitors are connected to a 15 V battery, 300 μJ of energy is drawn from the battery. If one of the capacitors has a capacitance of 5.0 pF, what is the capacitance of the other?

The number of atoms of chlorine present in 5.85g of Nacl is ?( Na =23 Cl=35.5)(Avogadro's number=6.02*10