When a wire is made smaller, the resistance increases. Which happens to the electric current?

Answers

Answer 1

Answer: Any time the resistance in a circuit increases, for any reason, the
current in the circuit decreases, unless the voltage is increased
to compensate for the greater resistance.

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A boy cycles a distance of 960 m from home to school in 6 minutes. Calculate his average speed for the journey. Write your answer in m/s.

Answers

The average speed of the boy was 2,67m/s.

The average speed is found when we divide the distance traveled (Δx) by the travel time (Δt).

The formula is:

$\Huge\boldsymbol{V_(av)=(\Delta x)/(\Delta t)}$

Solving:

Data:

Distance: 960m

Time: 6min ⇒ (6 · 60) ⇒360s

We have:

$\LARGE\text{$V_(av)=(960)/(360)$}\n\n\n\n\Huge\boldsymbol{V_(av)\approx2,67m/s}$

The average speed of the boy for his journey is approximately2,67m/s.

_________

Know more:

About speed:

Hope this helps!

To calculate the average speed of the boy's journey, you can use the formula:

Average Speed (in m/s) = Distance (in meters) / Time (in seconds)

First, you need to convert the time from minutes to seconds because 1 minute equals 60 seconds:

6 minutes = 6 * 60 seconds = 360 seconds

Now, you can calculate the average speed:

Average Speed = 960 meters / 360 seconds = 2.67 m/s

So, the boy's average speed for the journey is approximately 2.67 meters per second.

To dry the brakes, drive slowly in __________ and apply light pressure on your brake pedal.

Answers

The answer is low gear. To dry the brakes of a vehicle, one must driv slowly in low gear and apply light pressure on the vehicle's brake pedal. Dry brakes are less expensive and are cheap when it needs replacement, yet under pressure they may cause more damage to the system than wet brakes, which are better in terms of emergency.

The output of a solar panel powers a small pump. The pump operates a garden water fountain. The output of the solar panel is 10 V and the current supplied to the pump is 0.25 A. Calculate the electrical power generated by the solar panel.

Answers

The power generated by solar panel will be "2.7 W".

According to the question,

The values are:

Output of solar panel,

10 V

Current,

0.25 A

The electrical power generated will be:

→ $P = VI$

By substituting the given values is the above formula, we get

→ $= 10* 0.27$

→ $=2.7 \ W$

Thus the above answer is right.

Learn more about power here:

brainly.com/question/16642746

That’s tuff ima get in give me a min

A group of physics teachers is taking some time off for a little putt-putt golf. The 15th hold has a large metal rim that putters must use to guide their ball towards the hole. Mr S guides a golf ball around the metal rim. When the ball leaves the rim, which path (1,2 & 3) will the golf ball follow and why?

Answers

Call me nuts, but I can't shake the feeling that there's some kind of a
picture or drawing that's part of this question. Unless I miss my guess,
you copied part of the question, and then decided to stop right there and
not let us see the picture. If my hunch plays out, then we NEED to see
the picture in order to answer the question, and since you haven't shared
it, there is no way to write an answer.

A solid wood door (???? = 1 3 ????(width) 2 ) 1.00 m wide and 2.00 m high is hinged along one side and has a total mass of 44.0 kg. Initially open and at rest, the door is struck at its center by a handful of sticky mud with mass 0.700 kg , traveling perpendicular to the door at 14.0 m/s just before impact. Find the final angular speed of the door in (rad/s).

Answers

Answer:

$\omega =0.33\ rad/s$

Explanation:

given,

size of door = 1 m x 2 m

total mass = 44 Kg

mud mass attached = 0.700 Kg

speed of door = 14 m/s

angular speed of door = ?

conservation of angular momentum

initial angular momentum is equal to final momentum

$L_i = L_f$

$mvr = (I_(door)+I_(clay))* \omega$

$I_(door) = (1)/(3)MW^2$

$I_(door) = (1)/(3)* 44 * 1^2$

$I_(door) =14.67\ kg.m^2$

$I_(clay) = mr^2$

$I_(clay) = 0.7* 0.5^2$

$I_(clay) =0.175\ kg.m^2$

$0.7* 14* (1)/(2) = (14.67+0.175)* \omega$

$\omega =(4.9)/(14.845)$

$\omega =0.33\ rad/s$

A sample that is treated exactly like the other experimental groups except that the variable is not applied to it is a(n) _____. a. observation
b. variable
c. control
d. hypothesis

Answers

This is a "control" - answer c).

You always need a control in an experiment, otherwise you don't know what influenced the changes. Imagine you make children eat more vegetables and they grow - do you know if it's due to vegetables or not? You need to have another group that eats normal amounts of vegetables to compare this.

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Suppose an object starts out electrically neutral. Through some process, 11 electrons are removed from the object. What is the electric charge of the object afterward? ANSWER 1. Unselected It has a net charge somewhere between the charge of 11 electrons and 11 protons, but we can’t tell exactly how much. 2. Unselected The stated situation isn’t possible. 3. Unselected It has the same net charge as 11 protons. 4. Unselected It has the same net charge as 11 electrons.