What is the volume of a cube with length = 3 centimeters, width = 3

As a fish jumps vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the

Sever21 [200]

Answer:

a

$a = 12.32 \ m/s^2$

b

$F = 1017.52 \ N$

Explanation:

From the question we are told that

The length of the Chinook salmon is $l = 1.50 \ m$

The mass of the Chinook salmon is $m = 46.0 \ kg$

The upward velocity in water is $u = 3.00 \ m/s$

The upward velocity in air is $v = 5.80 \ m/s$

Generally from kinematic equations

$v^2 = u^2 + 2as$

=> $5.80^2 = 3.00^2 + 2 * a * [ [\frac{2}{3} * l ]$

=> $5.80^2 = 3.00^2 + 2 * a * [ [\frac{2}{3} * 1.5 ]$

=> $5.80^2 = 3.00^2 + 2 * a * [1 ]$

=> $a = 12.32 \ m/s^2$

Generally magnitude of the force F during this interval in N is mathematically represented as

$F = m (a + g )$

=> $F = 46.0 (12.32 + 9.8 )$

=> $F = 1017.52 \ N$

5 0

4 years ago

What is the efficiency of a device that takes in 400 J of heat and does 120 J

777dan777 [17]

The efficiency of the device is 30 %

Explanation:

The efficiency of a heat engine is given by:

$\eta = \frac{W}{Q_{in}}$

where

W is the work done by the engine

$Q_{in}$ is the heat in input to the engine

For the device in this problem, we have:

W = 120 J is the work done

$Q_{in} = 400 J$ is the heat in input

Substituting, we find the efficiency:

$\eta=\frac{120}{400}=0.30$

which corresponds to an efficiency of 30%.

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

7 0

3 years ago

Read 2 more answers

Which of the following statements BEST explains why ball-and-socket joints have the greatest range of motion? A. The contours of

vekshin1

The possible direction of movement of an object accounts for the motion.

The cup shape of the socket allows for nearly circular motion. Hence, option (D) is correct.

What is a Motion?

When an object tends to move from one point to another in a given interval of time, then the object is said to be in motion.

Ball-and-socket joints possess a rounded, ball-like end of one bone fitting into a cup-like socket of another bone. This system allows the greatest range of circular motion, as all movement types are possible in all directions.

Thus, we can conclude that the cup shape of the socket allows for nearly circular motion. Hence, option (D) is correct.

Learn more about the motion of object here:

brainly.com/question/1065829

5 0

3 years ago

A lightbulb has an effciency of 8.2%. How much light energy (not heat energy) is generated by the bulb every second if the buld

telo118 [61]

It really depends on what the bulb is being used for, since efficiency means how much of the output is USEFUL.
If the bulb is being used for light in a dark room, then it produces (8.2% x 21W) = 1.72 joules per second of light energy.
If the bulb is being used to keep a hamster cage or a fish tank warm, then the 8.2% is the useful part, and the light is the other (91.8% x 21W) = 19.28 joules per second.

8 0

3 years ago

If you apply 3 times the force for 4 times the distance, how much does your work increase?

masha68 [24]

12 increase When force is multiplied by the distance over which it is applied, that amount is given ... force * distance = work

4 0

3 years ago