What is a continuous range of a single feature such as a wave lengt

Complete the sentence-

trasher [3.6K]

Answer:

Friction always acts opposite to the motion.

3 0

2 years ago

Read 2 more answers

How does a solenoid convert energy from one form to another?

SIZIF [17.4K]

Answer:

A solenoid is a device comprised of a coil of wire, the housing and a moveable plunger (armature). When an electrical current is introduced, a magnetic field forms around the coil which draws the plunger in. More simply, a solenoid converts electrical energy into mechanical work.

Explanation:

The coil is made of many turns of tightly wound copper wire. When an electrical current flows through this wire, a strong magnetic field/flux is created.

The housing, usually made of iron or steel, surrounds the coil concentrating the magnetic field generated by the coil.

The plunger is attracted to the stop through the concentration of the magnetic field providing the mechanical force to do work.

6 0

2 years ago

An electric heater is operated by applying a potential difference of 78.0 V across a nichrome wire of total resistance 7.00 Ω. a

aleksley [76]

PART A)

Here we know that

potential difference across the wire is

$V = 78 volts$

resistance of wire is

$R = 7 ohm$

now by ohm's law

$V = iR$

$78 = i(7 ohm)$

$i = 11.14 A$

Part b)

Power rating is defined as rate of electrical energy

it is defined as

$P = iV$

now we have

$P = 11.14 ( 78)$

$P = 869.1 Watt$

8 0

2 years ago

A light bulb operating at a voltage of 120 v has a resistance of 200 ω. what is the power?

cluponka [151]

The correct is 72 watt

We know that formula of power is $P=\frac{v^{2} }{r}$

so putting the value of Voltage and Resistance in Formula of power so we get

$P=\frac{120^{2} }{200} =72$

What is Power?

Electric power is the rate at which an electric circuit transfers electrical energy per unit time.

Typically, electricity is generated by generators, but it can also be supplied by sources such as electric batteries. The electric power industry typically distributes it via an electric power grid to businesses and homes (as domestic mains electricity).

Transmission lines allow electric power to be delivered over long distances and used for high-efficiency applications such as motion, light, or heat. Electric charges are converted to other forms of energy when they pass through an electric potential difference (voltage).

To learn more about Power from the given link:

brainly.com/question/2333114

#SPJ4

4 0

1 year ago

A pendulum of length L = [02]____________________ cm and mass m = 169 g is released from rest when the cord makes an angle of 65

arsen [322]

Complete question:

A pendulum of length L = 48.5 cm and mass m = 169 g is released from rest when the cord makes an angle of 65.4° with the vertical. What is the speed of the mass (m/s) upon reaching its lowest point?

Answer:

The speed of the mass upon reaching its lowest point is 2.36m/s

Explanation:

To obtain the speed of the mass upon reaching its lowest point, we apply the principle of conservation of mechanical energy. At the lowest point, the kinetic energy of the pendulum is maximum and at the highest point, the vertical displacement is maximum, thus potential energy is maximum.

Kinetic energy at the lowest point = Potential energy at the highest point

$mgh = \frac{1}{2}mv^2\\\\gh = \frac{1}{2}v^2\\\\v^2 = 2gh\\\\v =\sqrt{2gh}$

From my explanation above, h is the vertical displacement, when potential energy of the pendulum is maximum. Considering a right angled triangle, this vertical displacement, h is the adjacent of the triangle, and it is equal to

L - Lcosθ.

h = 48.5 - 48.5cos(65.4) = 28.31 cm = 0.2831 m

$v =\sqrt{2gh} = v =\sqrt{2*9.8*0.2831} =2.36 \frac{m}{s}$

Therefore, the speed of the mass upon reaching its lowest point is 2.36m/s

7 0

3 years ago