What effect does adding more loops to the wire coil have on the electromagnet?

Answers

Answer 1

Answer: The strength of the electromagnet depends on the magnitude of the current in the wire and the number of turns of wire around the core. If you add more turns to the coil and keep the magnitude of the current constant, the electromagnet becomes stronger.

Related Questions

The two factors that determine velocity are....A: speed and direction B: direction and distance C: position and rateD: distance and massplease help which one are these . for science class
To neutralize gastric juices in your stomach antacids contain
Copernicus and other astronomers before him thought that celestial bodies followed a _____ orbital path.circular elliptical square
How much work does a person do in pushing a box with a force of 10 N over a distance of 4.0 m in the direction of the force?
when a beam of light passes at an oblique angle into a material of lower optical density, the angle of incidence is ?

A soda bottle is flexible enough that the volume of the bottle can change even without opening it. If you have an empty soda bottle (volume of 2.0 L) at room temperature (25 0C), what will the new volume be if you put it in your freezer (-4.0 0C)?

Answers

Answer: 1.81 L

Explanation:

Let us assume that we are dealing with an ideal or perfect gas. Thus we can use the formula from Charles' law that relates the volume with respect to the temperature of a gas.

Given:

Initial volume (V1) = 2L

Initial temperature (T1) = 25°C = 273 + 25 = 298 K

Final temperature (T2) = -4°C = 273 - 4 = 269 K

Final Volume (V2) = ?

Using Charles' law like we stated above, we have

(V1) / (T1) = (V2) / (T2), making V2 the subject of formula, we have

V2 = (V1 × T2) / T1

V2 = (2L × 269 K) / (298 K)

V2 = 538 L.K / 298 K

V2 = 1.81 L

What does viscosity describe? Question 4 options: A. a fluid's resistance to being heated
B. the rate of evaporation of a fluid
C. how much energy it takes to warm a fluid
D. the density of a fluid
E. a fluid's resistance to flowing

Answers

Answer:

E. a fluid's resistance to flowing

Explanation:

Viscosity, also known as "thickness" is a rheological property that describes a fluid's resistance to flowing, fluids of low viscosity, like water, flow more easily while high viscosity fluids, like mud, are harder to move through. It is an important property because it determines the energy required to make a certain fluid flow.

D. the density of a fluid

According to this equation, F=ma, how much force is needed to accelerate a 70-kg runner at 5m/s2?A.
350 m/s

B.
14 N

C.
350 N

D.
14 m/s

Answers

F=ma = 70*5 = 350N, therefore, 350N is needed to accelerate a 70-kg runner at 5m/s2.

How does the current values in and out of the battery compare to the sum of currents going through the light bulbs?Note: This is for Parallel circuits.

Answers

The current values in and out of the battery is going to be equal to the sum of the currents going through the light bulbs. In a parallel circuit, the current is divided as it enters different branches and light bulbs. However, the amount of current leaving the battery is always going to be the same as the amount of current entering the battery. Therefore, while current divides in a parallel circuit, the total amount of current always remains the same.

Calculate the annual potential energy contained in the water that is held back by the dam. Assume an average height of the water, h of 100.0 m. Express the answer in GJ (at least three significant figures).

Answers

Answer:

The potential energy can be given as

E = mgh. m is mass, g = acceleration due to gravity = 9.8m/s, h is the heigh, given as 100.0m

E = m x 9.8 x 100 = (980m)J

E = (980m)/10^9GJ = (0.000000980m)GJ to 3 significant figures

Explanation:

Hydroelectric dams exploit storage of gravitational potential energy. A mass, m, raised a height, h against gravity, g = 9.8 m/s², is given a potential energy E = mgh. The result will be in Joules if the input is expressed in meters, kilograms, and seconds (MKS, or SI units).

Which is larger an atom or a molecule

Answers

MOLECULE;
For example, a hydrogen atom forms one bond, an oxygen atom forms two, and carbon forms four bonds. Look at that molecule of water again - each hydrogen has one bond, and the oxygen in the middle has two bonds. Molecules can be much bigger.

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