Magnitude of the electric field causing the acceleration

Assignment Help Physics

Reference no: EM13675679

1. A 2 C charge and a 8 C charge repel each other with 10 N of force. How much will a 4 C charge and a 4 C charge repel each other when placed the same distance apart?

1. 20 N

2. 10 N

3. 8 N

4. 40 N

2. Consider two identical insulated metal spheres, A and B. Sphere A initially have a charge of -6.0 units and sphere B initially has an initial charge of -2.0 units. The sphere are brought in contact with each other for a short time and then separated again. What is the charge on each sphere afterward?

1. Sphere A: -6.0 units; sphere B: -2.0 units

2. Sphere A: -2.0 units; sphere B: -6.0 units

3. Sphere A: -8.0 units; sphere B: -8.0 units

4. Sphere A: -4.0 units; sphere B: -4.0 units **

3. If an object has a net negative charge of 4.0 coulombs, the object possesses

1. 6.3 × 1018 more electrons than protons

2. 2.5 × 1019 more electrons than protons**

3. 6.3 × 1018 more protons than electrons

4. 2.5 × 1019 more protons than electrons

4. A positively charged glass rod attracts object X. The net charge of object X

1. May be zero or negative**

2. May be zero or positive

3. 0Must be negative

4. Must be positive

5. Electrons are accelerated to reach a kinetic energy of 250 eV (= 4.0 x 10-17 J). If the acceleration is done in a distance of 0.20 m, what is the magnitude of the electric field causing the acceleration?

1.250 N/C

2. 50 N/C

3. 2500 N/C

4. 1250 N/C

6. Consider a parallel-plate capacitor with area A and plate separation d. What will happen to the capacitance if the area is halved and the distance is doubled?

1. The capacitance will be four times the original capacitance.

2. The capacitance will be twice the original capacitance.

3. The capacitance will be half of the original capacitance.

4. The capacitance will be a quarter of the original capacitance.

7. Three capacitors with capacitances of 24 µF, 36 µF, and 48 µF, respectively, are connected in series.

This combination is then connected to a 12 V battery. What is the charge on the 36 µF capacitor?

1. 1.3 mC

2. 9.0 µC

3. 0.13 mC

4. 11 µC

5. 0.43 mC

8. A 240 µF capacitor is connected to a 15 V power supply. What is the energy stored in the capacitor?

1. 1.8 µJ

2. 27 mJ

3. 27 J

4. 1.8 mJ

Reference no: EM13675679

Questions Cloud

Solid metal sphere in electrostatic equilibrium : A solid metal sphere in electrostatic equilibrium has a positive net charge. How is the net charge distributed in the metal sphere? Densely-packed towards the center of the sphere. Evenly-distributed on the surface of the sphere

Order-of-magnitude estimate of the number of leaves on tree : While admiring a tree, you notice that the leaves form a more or less continuous spherical shell, with relatively few leaves growing in the shell interior. You estimate that the diameter of this shell is about 30 m. Every leaf is about 5 in. long and..

Compute the de broglie wavelength : Compute the De Broglie wavelength a) an electron with a kinetic energy of 100 eV, (b) a proton with a kinetic energy of 100 eV, (c) an electron in the first Bohr orbit of a hydrogen atom.

Calculate the derivative of the speed of sound in air : Calculate the derivative of the speed of sound in air by respect to the absolute temperature, and show that the differentials dv and dT obey dv/v = 1/2 dT/T. Use this result to estimate the percentage change in the speed of sound when the temperature..

Magnitude of the electric field causing the acceleration : A 2 C charge and a 8 C charge repel each other with 10 N of force. How much will a 4 C charge and a 4 C charge repel each other when placed the same distance apart? Electrons are accelerated to reach a kinetic energy of 250 eV (= 4.0 x 10-17 J). If t..

When glass rod is rubbed with silk become positively charged : When a glass rod is rubbed with silk it (the rod) becomes positively charged. When two objects are rubbed together, which particle is most probable to be transferred? If the charge on each of two small spheres a fixed distance apart is halved, the fo..

Two point charges are located on x-axis : Two point charges are located on the x-axis. One has a charge of 1.29C and is located at x = 0.0 m, and the other has a charge of -4.35C and is located at x = 13.9 m. At what location on the x-axis (other than at infinity) would the electric force on..

What is the wavelength of the wave and wave velocity : A transverse wave of frequency 10 Hz propagates down a string. Two points 7 cm apart are out of phase by?/6. What is the wavelength of the wave? At a given point, what is the phase dissimilarity between two displacements for times 5 ms apart?

Four point charges have the same magnitude : Four point charges have the same magnitude of 2.36 10-12 C and are fixed to the corners of a square that is 3.65 cm on a side. Three of the charges are positive and one is negative. Decide the magnitude of the net electric field that exists at the ce..

User Account

All Pages