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3 years ago

Answer these questions please and you will get the brain list

Physics

1 answer:

Naddika [18.5K]3 years ago

7 0

I am using the equation F=ma (force equals mass times acceleration) to solve these problems.

1. You are looking for force, and have mass and acceleration. You just plug in the values for mass and acceleration to get the force needed.

F=(15kg)(5m/s^2)

F=75N

2. Again, you are looking for force, and just need to plug in the values for mass and acceleration

F=(3kg)(2.4m/s^2)

F=7.2N

3. In this problem, you have force and mass, but need to find acceleration. To do this, you need to get acceleration alone on one side of the equation - divide each side by m. Your equation will now be F/m=a

a=(5N)/(3.7kg)

a=18.5m/s^2

I did not use significant figures. Let me know if you need to do that and need any help on that. Hope this helps!

You might be interested in

When you throw a pebble straight up with initial speed V, it reaches a maximum height H with no air resistance. At what speed sh

aev [14]

Answer:

Explanation:

Given

Initial speed is u=V

Maximum height of Pebble is H

Deriving maximum height of Pebble and considering motion in vertical direction

$v^2-u^2=2 as$

where v=final velocity

u=initial velocity

a=acceleration

s=Displacement

Final velocity will be zero at maximum height

$0-(V)^2=2\times (-g)\cdot H$

$H=\frac{V^2}{2g}$

i.e. maximum height is dependent on square of initial velocity

for twice the height

$2H=\frac{(V')^2}{2g}$

on comparing

$V'=\sqrt{2}V$

7 0

3 years ago

The heaviest invertebrate is the giant squid, which is estimated to have a weight of about 0.37 tons spread out over its length

VladimirAG [237]

The giant squid, which has an estimated weight of 0.37 tons dispersed across a length of 40 feet, is the biggest invertebrate. It will weigh 3,628.4605 newtons.

<h3>What is weight?</h3>

The weight of matter is found as the product of the mass and the gravitational acceleration.

Unit conversion;

1 ton = 9806.65 N

0.37 tons = 0.37 × 9806.65 N

0.37 tons = 3,628.4605 N

Hence its weight in newtons will be 3,628.4605.

To learn more about the weight refer;

brainly.com/question/10069252

#SPJ1

4 0

2 years ago

6. The petrol in a petrol can weighs 2000g. The density of petrol is 0.8g/cm3.

frez [133]

Answer:

a. 2500 cm³.

b. 2.5 litres.

Explanation:

Given the following data:

Density = 0.8g/cm³

Mass = 2000g

To find the volume of the petrol;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the equation;

$Density = \frac{mass}{volume}$

Making volume the subject of formula, we have;

$Volume = \frac{mass}{density}$

Substituting into the equation, we have:

$Volume = \frac{2000}{0.8}$

Volume = 2500 cm³

a. The volume of the petrol in the can in cubic centimeters (cm³) is 2000.

b. The volume of the petrol in the can in litres;

1000 cm³ = 1 litre

2500 cm³ = x litres

Cross-multiplying, we have;

1000x = 2500

x = 2500/1000

x = 2.5 litres.

Therefore, the volume of the petrol in the can in litres is 2.5.

7 0

3 years ago

When you voice the vowel sound in "hat," you narrow the opening where your throat opens into the cavity of your mouth so that yo

xz_007 [3.2K]

Answer: 0.1 m, 0.0583 m

Explanation:

We are given that:

Frequency for throat= 800 Hz

Frequency for mouth= 1500 Hz

Sound speed= 350 m/s

We have to find the corresponding lengths.

We have

f= $\frac{v}{4L}$

or L= $\frac{v}{4f}$

For the throat= L= $\frac{350}{4*800\\}$ = 0.1 m

For the mouth= L= $\frac{350}{4*1500}$ = 0.0583 m

3 0

3 years ago

What happens when an electron moves from an excited state to the ground state?

Darina [25.2K]

<span>When an electron moves from an excited state to the ground state, "Energy releases"

Hope this helps!</span>

6 0

4 years ago