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4 years ago

A 12 kg bowling ball would require what force to accelerate down and alleyway at a rate of 3 m/s²?

1 answer:

defon4 years ago

8 0

Part 1. F= m*a
M=12kg
A= 3 m/s^2

So F = 12kg * 3 m/s^2 which means
F=36 Newton’s

Part 2. F=12000N
M= F/A
A=4 m/s^2

So M= 12000N / 4 m/s^2
Which means M=3000 kg

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. Two astronauts are 1.90 m apart in their spaceship. One speaks to the other. The conversation is transmitted to earth via elec

melomori [17]

Answer:

d= 1650 km.

Explanation:

Assuming that sound waves travel along a straight line at a constant speed of 346 m/s, we can find the time needed for the sound to travel the distance of 1.9 m between the astronauts, just applying the definition of average velocity, as follows:

$t = \frac{\Delta x}{v} =\frac{1.9m}{346m/s} = 5.5 msec (1)$

The electromagnetic waves travel in free space at the same speed of light in vacuum ( since light is a electromagnetic wave indeed), i.e., 3*10⁸ m/s.
Applying the same formula than in (1) we can solve for the distance d, as follows:

$d = v*t = 3e8 m/s*5.5e-3s = 1650 km (2)$

3 0

3 years ago

Find the net rate of heat transfer by radiation in watts from a skier standing in the shade, given the following. She is complet

fomenos

Answer:

-34.5 W

Explanation:

rate of heat transfer = Stefan-Boltzmann constant x emissivity x surface area x temperature^4

$P = \alpha eA(T_{f} ^{4}- T_{i} ^{4}) = 5.67*10^{-8} *0.205*1.5(256^{4} - 284.4^{4} ) = -34.5 W$

6 0

3 years ago

Which term refers to the use of strength to hold the body's position?

Andrew [12]

Answer:

Th e correct answer is B. Balance

Explanation:

Balance is an ability of a body to maintain the line of gravity with negligible postural sway. Sway is the horizontal movement of the center of gravity of a body if a body is standing still.

If you want to stay for a long period of time in one position without movement, then you need balance. So the term refers to the use of strength to hold the body's position is balance.

Agility refers to the flexibility of the body or jumping

Power means Strength in general

Speed is the ability that how can a person run fast.

6 0

3 years ago

An object accelerates to a velocity of 34m/s over a time of 1.3 s the acceleration it experienced was 15 m/s squared what was th

just olya [345]

V=v0+at=>v0=v-at=34-15•1,3=34-19,5=14,5m/s

7 0

3 years ago

Read 2 more answers

Name five lifestyle activities

UNO [17]

Jogging
weight room
cancer run
cancer walks
teaching how to cook healthy meals

4 0

3 years ago