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3 years ago

What is Newtens first law of motion

2 answers:

5 0

Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. Basically a object won't move (remain in rest) or will keep moving in a straight line unless acted on by a outside or force. For example if i had a water bottle on top of my desk the water bottle won't till i touch it or wind knocks it over.

-hope this helps :D

OlgaM077 [116]3 years ago

4 0

Newtons first law states that an object will remain still or in straight line. Until acted upon some force!

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Which best describes the electric field created by a positive charge?

Vlad [161]

Its rays point away from the charge

3 0

3 years ago

Read 2 more answers

An ac generator consists of a coil with 40 turns of wire, each with an area of 0.06 m2. The coil rotates in a uniform magnetic f

Reptile [31]

Answer:

331.75 V

Explanation:

Given:

Number of turns of the coil, N = 40 turns

Area, A = 0.06 m²

Magnetic Field, B = 0.4 T

Frequency, f = 55 Hz

Maximum induce emf, E₀ = NABω

but ω = 2πf

Maximum induce emf, E₀ = NAB(2πf₀)

Maximum induce emf, E₀ = 2πNABf₀

Where;

N is number of turns of the coil

A is area

B is magnetic field

ω is the angular velocity

f is the frequency

E₀ = 2 × π × 40 × 0.06 × 0.4 × 55

E₀ = 342.81 V

The maximum induced emf is 331.75 V

6 0

3 years ago

How are stars formed and classified?

Romashka-Z-Leto [24]

Stars form from an accumulation of gas and dust, which collapses due to gravity and starts to form stars. Stars are typically classified by their spectrum in what is known as the Morgan-Keenan or MK system.

6 0

3 years ago

Consider the Uniform Circular Motion Gizmo configured as shown. Notice that, under the current settings, |a|=0.50m/s2. What chan

Eddi Din [679]

To increase the centripetal acceleration to $2.00 m/s^2$ , you can double the speed or decrease the radius by 1/4

Explanation:

An object is said to be in uniform circular motion when it is moving at a constant speed in a circular path.

The acceleration of an object in uniform circular motion is called centripetal acceleration, and it is given by

$a=\frac{v^2}{r}$

where

v is the speed of the object

r is the radius of the circular path

In the problem, the original centripetal acceleration is

$a=0.50 m/s^2$

We want to increase it by a factor of 4, i.e. to

$a'=2.00 m/s^2$

We notice that the centripetal acceleration is proportional to the square of the speed and inversely proportional to the radius, so we can do as follows:

- We can double the speed:

v' = 2v

This way, the new acceleration is

$a'=\frac{(2v)^2}{r}=4(\frac{v^2}{r})=4a$