Ask question

Ask question

All categories

3 years ago

8

If you are having a bad day, remember to stay positive! I pray that you pass a hard exam, quiz, test and get through depression,

anxiety, stress and more! God Bless you! Even if you aren’t religious have a good day! :)

1 answer:

kari74 [83]3 years ago

3 0

This is so sweet I wish the same back to you :))

You might be interested in

How much work is done when a 25-N horizontal force is applied to a 10-kg box, causing it to move 5 meters?

Katarina [22]

Answer:

W=50*sin(25)

Explanation:

W=F*D*sin(25)

W=10*5*sin(25)

W=50*sin(25)

8 0

3 years ago

A 3 kg mass object is pushed 0.6 m into a spring with spring constant 210 N/m on a frictionless horizontal surface. Upon release

Aleksandr-060686 [28]

Answer with Explanation:

We are given that

Mass of spring,m=3 kg

Distance moved by object,d=0.6 m

Spring constant,k=210N/m

Height,h=1.5 m

a.Work done to compress the spring initially= $\frac{1}{2}kx^2=\frac{1}{2}(210)(0.6)^2=37.8J$

b.

By conservation law of energy

Initial energy of spring=Kinetic energy of object

$37.8=\frac{1}{2}(3)v^2$

$v^2=\frac{37.8\times 2}{3}$

$v=\sqrt{\frac{37.8\times 2}{3}}$

v=5.02 m/s

c.Work done by friction on the incline, $w_{friction}=P.E-spring \;energy$

$W_{friction}=3\times 9.8\times 1.5-37.8=6.3 J$

3 0

3 years ago

Give me 4 sources of renewable and nonrenewable

aev [14]

Answer:

Written Below.

Explanation:

There are four major types of nonrenewable resources:

Oil
Natural Gas
Coal
Nuclear energy

There are four major renewable energy resources:

Solar
Wind
Water (Hydro)
Biomass

Sidenote: I hope this helps! :)

7 0

3 years ago

How much kinetic energy does a 7.2-kg dog need to make a vertical jump of 1.2 m? (The acceleration due to gravity is 9.8 m/s2.)

V125BC [204]

<span>How much kinetic energy does a 7.2-kg dog need to make a vertical jump of 1.2 m?
</span>Answer:

85 Joule (approx)

Explanation:

Potential energy at highest point

<span><span>P.E = mgh = 7.2 kg × 9.8 m/s2</span>×1.2 m≈85 Joule</span>

This is the kinetic energy required for dog to jump a height of 1.2 m.

hope this helps!

7 0

3 years ago

Read 2 more answers

Please answer thanks

cupoosta [38]

A) 20Newtons is the answer

7 0

3 years ago

Read 2 more answers