All categories

3 years ago

Newton’s first law states that if an objects velocity is changing a _____ must be acting on it.

Physics

1 answer:

klio [65]3 years ago

6 0

<h3>Answer: </h3>

(a)

<h3>Explanation </h3>

Newtons First Law can be written as the formula

$f = ma$

since acceleration is the changing of velocity as its formula is

$\frac{v2 - v1}{t}$

Thus, a force must be acting on an accelerating/decelerating object

It is not mass as the mass does not act on the object but rather the mass is acting on the surface of the ground.

Changing velocity is already acceleration

inertia is the term used to describe Newtons first law

You might be interested in

If the magnitude of the magnetic force on a proton is F when it is moving at 14.0 o with respect to the field, what is the magni

sergeinik [125]

Answer:

The magnitude of the magnetic force at 32.5⁰ to the field, is 2.22 F

Explanation:

Given;

magnitude of the magnetic force is F at 14.0⁰ with respect to the field.

To determine the magnitude of the magnetic force at 32.5⁰ to the field, we apply the following formula and solve with proportion;

f*Sin(14.0⁰) = F

f*Sin(32.5⁰) = ?

$= \frac{f*Sin(32.5^o)}{f*Sin(14.0^o)}.F\\\\ =2.22 \ F$

Therefore, the magnitude of the magnetic force at 32.5⁰ to the field, is 2.22 F

6 0

4 years ago

A circular loop of radius 11.7 cm is placed in a uniform magnetic field. (a) If the field is directed perpendicular to the plane

Mama L [17]

Answer:

Magnetic field, B = 0.199 T

Explanation:

It is given that,

Radius of circular loop, r = 11.7 cm = 0.117 m

Magnetic flux through the loop, $\phi=8.6\times 10^{-3}\ T/m^2$

The magnetic flux linked through the loop is :

$\phi=B.A$

$\phi=BA\ cos\theta$

Here, $\theta=0$

$B=\dfrac{\phi}{A}$

$B=\dfrac{\phi}{\pi r^2}$

$B=\dfrac{8.6\times 10^{-3}}{\pi (0.117 )^2}$

B = 0.199 T

So, the strength of the magnetic field is 0.199 T. Hence, this is the required solution.

4 0

3 years ago

A farmhand attaches a 25-kg bale of hay to one end of a rope passing over a

Georgia [21]

Explanation:

Newton's second law:

∑F = ma

277 N − 245 N = (25 kg) a

a = 1.28 m/s²

8 0

3 years ago

Following a collision between a large spacecraft and an asteroid, a copper disk of radius 28.0 m and thickness 1.20 m, at a temp

coldgirl [10]

Answer:

A. 9.31 x10^10J

B. -8.47x10 ^ 12J

C. 8.38x 10^12J

Explanation:

See attached file pls

3 0

3 years ago

Bursitis can affect many joints and can be caused by a numerous sporting activities, such as cycling, tennis, and long-distance

DerKrebs [107]

Bursitis is when the small fluid filled sacs around the joints called bursae are irritated or injured. In just about any joint the effects can be felt with pain in movement and when pressed upon. Sometimes a rash will occurs as well. Thank you for posting your question here. I hope the answer will help. <span>
</span>

6 0

3 years ago

Read 2 more answers