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3 years ago

What force would be needed to make a 10kg bowling ball accelerate down the alleyway with an acceleration of 3m/s2

Physics

1 answer:

Anna007 [38]3 years ago

7 0

Answer:

30 N

Explanation:

From Newton's second law:

F = ma

F = (10 kg) (3 m/s²)

F = 30 N

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Froghopper insects have a typical mass of around 11.3 mg and can jump to a height of 58.8 cm. The takeoff velocity is achieved a

allochka39001 [22]

Answer:

2874.33 m/s²

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

g = Acceleration due to gravity = 9.81 m/s²

$v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{v^2-0^2}{2\times h}\\\Rightarrow v^2=2ah\ m/s$

Now H-h = 0.588 - 0.002 = 0.586 m

The final velocity will be the initial velocity

$v^2-u^2=2as\\\Rightarrow 0^2-u^2=2gs\\\Rightarrow -2ah=2\times g(H-h)\\\Rightarrow -2a0.002=2\times g0.586\\\Rightarrow a=-\frac{0.586\times -9.81}{0.002}\\\Rightarrow a=2874.33\ m/s^2$

Acceleration of the frog is 2874.33 m/s²

6 0

4 years ago

Compare the characteristics of 4d orbitals and 3d orbitals and compared the following sentences. Check all that apply

charle [14.2K]

Answer :

<em>(b) 4d orbitals would be larger in size than 3d orbitals</em>

<em>(e) 4d orbitals would have more nodes than 3d orbitals</em>

Explanation :

As we move away from one orbital to another, the distance between nucleus and orbital increases. So, 4d orbitals would be far to the nucleus than 3d orbitals.

Hence, 4d orbitals would be larger in size than 3d orbitals.

Number of nodes is any orbital is n - 1 where, n is principal quantum number.

So, number of orbital in 4d is 3.

And number of orbital in 3d is 2.

So, options (b) and (e) are correct.

8 0

3 years ago

Which of these is equivalent to the law of conservation of energy?

zalisa [80]

The answer is D.
C and A are incomplete as they only treat specific types of energy, and B doesn't answer the question.

7 0

3 years ago

Question 7 Points 3 5 A vehicle is traveling with the velocity of 120 km/h. How much distance will it cover in 30 s? d

ludmilkaskok [199]

Answer:

Velocity v = 120 km/h

Time t = 30 s

Let Distance be d

First, we need to convert 120 km/h into m/s

1 km/h = (1000m)/(3600 s) = 5/18 m/s

So, 120 km/h = 120×5/18 m/s

So, v = 200/6 m/s

Now, velocity = distance/time

So d = v×t

So, d = (200/6) × 30

So, d = 1000 m

So, d = 1 km

Thus, distance travelled is 1 km

Explanation:

8 0

3 years ago

Read 2 more answers

What is transferred when a wave hits the beach

Degger [83]

A tsunami or a high tide wave
hoep this helped u!!

8 0

3 years ago