All categories

1 year ago

Plsss help me i need the answers

Physics

2 answers:

sergey [27]1 year ago

8 0

Answer: 400N

Step-by-Step Explanation:

We know, F = ma
m = 200kg
a = 2 m/s^2

Therefore,
= m * a
= 200 * 2
= 400 N

If this Answer helped, please mark it as Brainliest. Thank you!

Vikentia [17]1 year ago

7 0

You find the answer by solving the problem.

You can solve the problem by using the equation that tells how force, mass, and acceleration are connected.

The equation is in the "Hint".

F = m • a

Force = mass • acceleration

mass = 2000 kg

acceleration = 2 m/s^2

Force = (2000 kg) • (2 m/s^2)

Force = 4,000 Newtons

You might be interested in

The wires in a household lamp cord are typically 3.5 mm apart center to center and carry equal currents in opposite directions.

zhuklara [117]

Explanation:

It is given that,

Distance between wires, d = 3.5 mm = 0.0035 m

Power of light bulb, P = 100 W

Potential difference, V = 120 V

(a) We need to find the force per unit length each wire of the cord exert on the other. It is given by :

$\dfrac{F}{l}=\dfrac{\mu_o I^2}{2\pi r}$

Power, P = V × I

$I=\dfrac{P}{V}=\dfrac{100}{120}=0.83\ A$

This gives, $\dfrac{F}{l}=\dfrac{4\pi \times 10^{-7}\times (0.83)^2}{2\pi \times 0.0035}$

$\dfrac{F}{l}=0.0000393\ N/m$

$\dfrac{F}{l}=3.93\times 10^{-5}\ N/m$

(b) Since, the two wires carry equal currents in opposite directions. So, teh force is repulsive.

(c) This force is negligible.

Hence, this is the required solution.

8 0

3 years ago

Half-Life refers to radiation levels true or false

o-na [289]

Answer:

True

Explanation:

Because half life is the length of time it takes for the,half of the radioactive atoms of a specific radionuclied to decay.

3 0

3 years ago

A child throws a ball vertically upward to a friend on a balcony 28 m above him. The friend misses the ball on its upward flight

photoshop1234 [79]

Answer:

$t=1.9 sec$

Explanation:

From the question we are told that:

Height $h=28m$

Time $t=3s$

Generally the Newton's equation for Initial velocity upward is mathematically given by

$s=ut+\frtac{1}{2}at^2$

$28=3u-\frac{1}{2}*9.8*3^2$

$u=24.03m/s$

Generally the velocity at elevation and depression occurs as ball arrives and passes through S=28

$v=\sqrt{24.03-2*9.8*28}$

$v=5.35m/s and -5.35m/s$

Generally the Newton's equation for time to reach initial velocity is mathematically given by

$v=u+at$

$5.35=24.03-9.8t$

$t=\frac{28.03-5.35}{9.8}$

$t=1.9 sec$

4 0

2 years ago

Why is the process of photosynthesis important to food webs?

Slav-nsk [51]

Answer:

to know what that specif animal or thing does in the food chain

Explanation:

5 0

2 years ago

develop a plan to test the hardness of a sample of feldspar using the following items glass plate copper penny and streak plate

Artemon [7]

Stroke then 3883 you choke <3333333333

6 0

2 years ago