PHYSICS
COLLEGE

Answer:

Answer:

N/C

Solution:

Charge, Q =

Coordinates (x, y, z) are (1, 2, 2)

Now, we know that the Electric field at any point in the Cartesian plane is given by:

(1)

where

d = distance of the charge from the point

Now, from eqn (1):

N/C

N/C

COLLEGE

Young's experiment is performed with light of wavelength 502nm from excited helium atoms. Fringes are measured carefully on a screen 1.35m away from the double slit, and the center of the 20th fringe (not counting the central bright fringe) is found to be 10.4mm from the center of the central bright fringe. What is the separation of the two slits?

Answer:

d = 1.30 mm

Explanation:

given,

wavelength of the light source (λ)= 502 nm

slits is separated (d) = ?

distance to form interference pattern(D) = 1.35 m

20 th fringe

y = 10.4 mm = 0.0104 m

now,separation between to slits

where y is the fringe width

d = 1.30 mm

separation between to slits is equal to d = 1.30 mm

HIGH SCHOOL

How many moons we have in our earth

We only have one moon. hope that helped

HIGH SCHOOL

The mechanical energy of an object equals its A. chemical energy plus its nuclear energy.

B. kinetic energy plus its potential energy.

C. nuclear energy.

D. thermal energy.

I think the correct answer from the choices listed above is option B. The mechanical energy of an object equals its kinetic energy plus its potential energy. It should be equal to energy that it posses and the energy of motion it has. Hope this answers the question.

"Mechanical Energy" is the category where

kinetic energy and potential energy are filed.

kinetic energy and potential energy are filed.

COLLEGE

The electric field strength between the plates of a simple air Capacitor is equal to the voltage across the plates divided by the distance between them. When a voltage of 112 V is put across the plates of such a capacitor an electric field strength of 1.1 kV/cm is measured. Write an equation that will let you calculate the distance d between the plates. Your equation should contain only symbols. Be sure you define each symbol

Answer:

Explanation:

The electric field strength between the plates of a parallel plate capacitor is given by:

where

V is the potential difference

d is the distance between the plates

If we re-arrange the formula, we find a new equation that lets us calculate d:

We can at this point substitute the values:

V = 112 V

E = 1.1 kV/cm = 1100 V/cm = 110,000 V/m

To find the distance:

HIGH SCHOOL

A wave has a wavelength of 5 mm and a frequency of 17 hertz. What is its speed?

S= frequency x wavelength

s=17 x 5

s=85mm/s

s=17 x 5

s=85mm/s

COLLEGE

A hall probe serves to measure magnetic field strength. such a probe consists of a poor conductor 0.155 mm thick, whose charge-carrier density is 1.05 × 1025 m3. when a 2.67-a current flows through the probe, the hall voltage is measured to be 4.89 mv. what is the magnetic field strength?

We are given the following:

thickness, T = 0.155 mm

charge-carrier density, n = 1.05 x 10^25 / m3

current, I = 2.67 A

voltage, V = 4.89 mV

We are asked to get the magnetic strength, B

To solve this, we use the Hall Effect formula:

V = - IB / neT

where e is the charge of an electron which is e = 1.60 x 10^-19 and B is the magnetic field

Rearranging the formula

B = -V n e T / I

Substituting the given values

B = - (4.89 x 10^-3 V) (1.05 x 10^25 / m3) (0.155 x 10^-3 m) / 2.67 A

B = -2.98 x 10^18 Teslas

thickness, T = 0.155 mm

charge-carrier density, n = 1.05 x 10^25 / m3

current, I = 2.67 A

voltage, V = 4.89 mV

We are asked to get the magnetic strength, B

To solve this, we use the Hall Effect formula:

V = - IB / neT

where e is the charge of an electron which is e = 1.60 x 10^-19 and B is the magnetic field

Rearranging the formula

B = -V n e T / I

Substituting the given values

B = - (4.89 x 10^-3 V) (1.05 x 10^25 / m3) (0.155 x 10^-3 m) / 2.67 A

B = -2.98 x 10^18 Teslas

HIGH SCHOOL

Which type of mixture can be separated using distillation? A compound with elements of different boiling points

Homogeneous mixture with components of different boiling points

A compound with elements of similar boiling points

Homogeneous mixture with components of similar boiling points

Answer:

B

Explanation:

Homogeneous mixture with components of different boiling points

Homo means it is not dissolved yet, making it easier to extract using distillation process.

HIGH SCHOOL

A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 420 nm.? What is the speed of light in this solid? What is the light's frequency in the solid? A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 420 nm.? What is the speed of light in this solid? What is the light's frequency in the solid? Answers as well as explanations would be greatly appreciated so that I can understand how to work the problem when I solve it later. Thanks! 1 following 1 answer 1 Report Abuse Are you sure you want to delete this answer? Yes No

The frequency of a beam of light does not change as it passes from a medium to another, only its wavelength and speed are affected. The experimental speed of light in air is:

3 * 10^8 m/s

Therefore, the frequency of this beam of light is:

v = fλ; where v is speed, f is frequency, and λ is the wavelength. The frequency thus is:

3×10⁸ / (670 × 10⁻⁹) = 4.48 × 10¹⁴ Hz

The frequency will remain the same in the solid medium

The speed will then become:

4.48 × 10¹⁴ × 420 × 10⁻⁹ = 1.88 × 10⁸ meters per second

3 * 10^8 m/s

Therefore, the frequency of this beam of light is:

v = fλ; where v is speed, f is frequency, and λ is the wavelength. The frequency thus is:

3×10⁸ / (670 × 10⁻⁹) = 4.48 × 10¹⁴ Hz

The frequency will remain the same in the solid medium

The speed will then become:

4.48 × 10¹⁴ × 420 × 10⁻⁹ = 1.88 × 10⁸ meters per second

HIGH SCHOOL

Scallops use jet propulsion to move from one place to another. Their shells make them denser than water, so they normally rest on the ocean floor. If a scallop wishes to remain stationary, hovering a fixed distance above the ocean floor, it must eject water _____ so that the thrust force on the scallop is _____.

Answer:

Scallops use jet propulsion to move from one place to another. Their shells make them denser than water, so they normally rest on the ocean floor. If a scallop wishes to remain stationary, hovering a fixed distance above the ocean floor, it must eject water downwards so that the thrust force on the scallop is upwards.

Explanation:

For every action, there is a reaction with the same magnitude but in the opposite way (third law of Newton), so when the scallop ejects water downwards, another force appears that pushes the scallop upwards.

Answer

Downward, Upward

Explanation: