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3 years ago

What is the difference between a learner’s license and an operator’s license?

1 answer:

5 0

A Learner’s license is available to those at least 15 years old that have passed the written and vision tests.
An intermediate license, you must be 16 or 17 years old and you must have held a learner’s license for at least 12 months without receiving any traffic violations.

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Give reason as to why space is a quiet place?

Darina [25.2K]

Answer:A Quiet Place is a 2018 American horror film directed by and starring John Krasinski. Written by ... Four-year-old Beau is drawn to a battery-powered space shuttle toy, but Lee takes it away due ... Beau activates the toy when the family is walking home while crossing a bridge, giving away his location to a nearby creature that .

Explanation:

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3 years ago

A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.40 T is perpendicular to the loop. The field

vazorg [7]

The magnitude of the induced emf is given by:

ℰ = |Δφ/Δt|

ℰ = emf, Δφ = change in magnetic flux, Δt = elapsed time

The magnetic field is perpendicular to the loop, so the magnetic flux φ is given by:

φ = BA

B = magnetic field strength, A = loop area

The area of the loop A is given by:

A = πr²

r = loop radius

Make a substitution:

φ = B2πr²

Since the strength of the magnetic field is changing while the radius of the loop isn't changing, the change in magnetic flux Δφ is given by:

Δφ = ΔB2πr²

ΔB = change in magnetic field strength

Make another substitution:

ℰ = |ΔB2πr²/Δt|

Given values:

ΔB = 0.20T - 0.40T = -0.20T, r = 0.50m, Δt = 2.5s

Plug in and solve for ℰ:

ℰ = |(-0.20)(2π)(0.50)²/2.5|

ℰ = 0.13V

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3 years ago

A 5 kg mass is oscillating on a spring with a time period of 2.8 seconds. What is the spring constant k of the spring?

katrin [286]

Answer:

k = 25.18 N/m

Explanation:

Simple Harmonic Oscillator

It consists of a weight attached to one end of a spring being allowed to move forth and back.

If m is the mass of the weight and k is the constant of the spring, the period of the oscillation is given by:

$\displaystyle T=2\pi {\sqrt {\frac {m}{k}}}$

If the period is known, we can find the value of the constant by solving for k:

$\displaystyle k=m\left(\frac{2\pi}{T}\right)^2$

Substituting the given values m=5 Kg and T=2.8 seconds:

$\displaystyle k=5 \left(\frac{2\pi}{2.8}\right)^2$

k = 25.18 N/m

5 0

3 years ago

Study the image of a seismic graph.

melomori [17]

Answer:

B= 4,000 km

Explanation:

I just took the test on edge :)

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3 years ago

Read 2 more answers

What is the metric unit used to measure length? Mass? Volume? Temperature? List one tool used to measure each type of measuremen

Harrizon [31]

Length

The metric unit used to measure length in International System (SI) is meter and it is represented by letter m.

Length can be measured by a metric scale.

Mass

The metric unit used to measure Mass in International System (SI) is Kilograms and it is represented by letter Kg.

Mass can be measured by an instrument called Balance.

Volume

The metric unit used to measure Volume in International System (SI) is Liter and it is represented by letter l.

Volume can be measured by a container called graduated cylinder.

Temperature

The metric unit used to measure Temperature in International System (SI) is Kelvin and it is represented by letter K.

Temprature is measured by most common divice called thermometer.

5 0

3 years ago