What is the mass of an object if a net force of 8.0 N causes it to accelerate at 1.1 m/s2?

If a positively charged body is moved against an electric field it will gain?

Gnoma [55]

Answer:

positive charge

Explanation:

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of electric charge: positive and negative.

<em>hope it helps :)</em>

<em>please mark it the brainliest!</em>

5 0

4 years ago

An 8.00-g sample of aluminum reacts with oxygen to form 15.20 g of aluminum oxide. how many grams of oxygen are used in the reac

konstantin123 [22]

I would say the the answer is 7.20 because if subtract the 8.00 grams from the 15.20 g you would get 7.20. Am I correct, please ley me know

7 0

3 years ago

A binary star system consists of two stars of masses m1 and m2. The stars, which gravitationally attract each other, revolve aro

mote1985 [20]

Answer: $a_{2}=\frac{m_{1}}{m_{2}} a_{1}$

Explanation:

The rest of the question is below:

Find a2, the magnitude of the centripetal acceleration of the star with mass m2.

Assuming both stars are describing a uniform circular motion, their acceleration vector is directed towards the center of mass of the system (that's why it's called centripetal acceleration).

Now, according to Newton's 2nd law, the force $F$ is directly proportional and in the same direction as the acceleration.

For $m_{1}$ :

$F_{1}=m_{1}a_{1}$

For $m_{2}$ :

$F_{2}=m_{2}a_{2}$

If the centripetal force is the same for both stars:

$F_{1}=F_{2}$

$m_{1}a_{1}=m_{2}a_{2}$

Isolating $a_{2}$ :

$a_{2}=\frac{m_{1}}{m_{2}} a_{1}$

8 0

3 years ago

Suppose you add two vectors A and B . What relative direction between them produces the resultant with the greatest magnitude? W

Akimi4 [234]

Answer:

Same direction to produce maximum magnitude and opposite direction to produce minimum magnitude

Explanation:

Let a be the angle between vectors A and B. Generally when we add A to B, we can split A into 2 sub vectors, 1 parallel to B and the other perpendicular to B.

Also let A and B be the magnitude of vector A and B, respectively.

We have the parallel component after addition be

Acos(a) + B

And the perpendicular component after addition be

Asin(a)

The magnitude of the resulting vector would be

$\sqrt{(Acos(a) + B)^2 + (Asin(a))^2}$

$= \sqrt{A^2cos^2a + B^2 + 2ABcos(a) + A^2sin^2a}$

$= \sqrt{A^2(cos^2a + sin^2a) + B^2 + 2ABcos(a)}$

$= \sqrt{A^2 + B^2 + 2ABcos(a)}$

As A and B are fixed, the equation above is maximum when cos(a) = 1, meaning a = 0 degree and vector A and B are in the same direction, and minimum with cos(a) = -1, meaning a = 180 degree and vector A and B are in opposite direction.

8 0

3 years ago

Can toe touches help you improve flexibility? Yes/No

jolli1 [7]

Yes it helps improve flexibility

7 0

3 years ago

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