Which coil, primary or secondary, has more windings in a step-up transformer? Explain. [A step up transformer has a higher voltage output from the secondary coil than is input to the primary coil.]

A 22.3 kg child rides a 0.800 kg potato sack down a 4.40 m high slide. If the child starts from rest and has a speed of 2.50 m/s at the bottom of the slide, what is the change in thermal energy of the child on their potato sack and the slide?

a) 1.07×10³ J

b) 996 J

c) 72.2 J

d) 924 J

Hi I am confused a little about equations for constructive and destructive interference and also about the difference in equations for diffraction and interference and also what equations we use for young's single slit experiment and double slit experiment.Can you please explain the difference??

A particle is uncharged and is thrown vertically upward from ground level with a speed of 23.1 m/s. As a result, it attains a maximum height h. The particle is then given a positive charge +q and reaches the same maximum height h when thrown vertically upward with a speed of 27.3 m/s. The electric potential at the height h exceeds the electric potential at ground level. Finally, the particle is given a negative charge −q. Ignoring air resistance, determine the speed with which the negatively charged particle must be thrown vertically upward, so that it attains exactly the maximum height h. In all three situations, be sure to include the effect of gravity.
m/s

Two point charges, +3.06 µC and -6.20 µC, are separated by 1.10 m. What is the electric potential midway between them?
V

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.65 ✕ 105 Pa and the pipe radius is 2.70 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 ✕ 105 Pa and the pipe radius is 1.40 cm. (a) Find the speed of flow in the lower section. (b) Find the speed of flow in the upper section. (c) Find the volume flow rate through the pipe.

The current of a beam of electrons, each with a speed of 908 m/s, is 7.15 mA. At one point along its path, the beam encounters a potential step of height -1.28 μV. What is the current on the other side of the step boundary?

Part A) A bright object and a viewing screen are separated by a distance of 81.5 cm . At what distance(s) from the object should a lens of focal length 17.0 cm be placed between the object and the screen in order to produce a crisp image on the screen? d=____? cm

Part B) An object is placed 18 cm from a certain mirror. The image is half the size of the object, inverted, and real. What is the radius of curvature of the mirror? Follow the sign conventions.

Suppose we have a piece of metal sheet of length l = 5.8 cm, and width w = 10.2 cm to make a capacitor.

(a) If we cut it in two equal halves and make it into a parallel capacitor with plate separation d = 0.4 cm, find the capacitance in pF.
=____ pF

(b) If we cut it into two sections with widths 2?a and 2?b instead (a < b), and roll them up to form a cylindrical capacitor with two shells separated by the same distance d radially, find a and b (in cm).
a =___ cm

A disk rolls up an inclined plane, reaches point A, stops there momentarily, and then rolls down the inclined plane. Use the x-y coordinate system to determine the direction of the angular velocity and the angular acceleration in each part of the motion as given below. If either one is zero, say so. (a) when the disk is going up the incline. (i) angular velocity? (ii) angular acceleration? (b) at point at the top of the incline (point A) when the disk stops momentarily. (i) angular velocity? (ii) angular acceleration? (c) when the disk is rolling down the incline. (i) angular velocity? (ii) angular acceleration? (*Options: +x, -x, +y, -y, +z, -z, and 0)

A small, square loop carries a 48 A current. The on-axis magnetic field strength 42 cm from the loop is 6.8 nT .

What is the edge length of the square?

Thanks in advance.

A magnet of mass 0.15 kg is dropped from rest and falls vertically through a 35.0 cm copper tube. Eddy currents are induced, causing the copper to warm up. The speed of the magnet as it emerges from the tube is 1.00 m/s. How much heat energy is dissipated to the environment?

Respond to the following in a minimum of 175 words:

DO NOT HAND WRITE ANSWER PLEASE TYPE ANSWER

• Why does the vertical component of velocity for a projectile change with time, whereas the horizontal component of velocity does not? How can the conservation of energy help us explain these concepts?

1-Derive the capacitance in 3 capacitors, C1, C2, and C3 in series.

2-Derive the capacitence in 3 capacitors C1, C2, C3 in parallel.

5. In a two-slit experiment, the slit separation is 3.00x 10^-5 m. The interference pattern is created on a screen that is 2.00 m away from the slits. If the 7^th bright fringe on the screen is 10.0 cm away, from the central fringe, what is the wavelength of light?

6. A single slit, which is 0.0500 mm wide, is illuminated by light of 550 nm wavelength. What is the angular separation between the first two minima on either side of the central maximum?