All categories

4 years ago

Which of the following examples describes mechanical efficiency?

Physics

2 answers:

Kaylis [27]4 years ago

8 0

Answer:

Hello

I think the first one is correct.

Explanation:

Dominik [7]4 years ago

6 0

A...............is the answer

You might be interested in

Which resource would be the best choice to learn more information about studying martial arts?

zhuklara [117]

Answer:

Dance studio

Explanation:

Martial art use to defend ourself from any dangerous. Dance is a way to learn it

3 0

3 years ago

Explain why incremental development is the most effective approach for developing business software systems. Why is this model l

Ksenya-84 [330]

Explanation:

Typically, business software technologies are complex, and software strenuous. Business software applications are also often upgraded for changes in business goals or procedures. Real-time systems usually require a lot of hardware components that are quite difficult to change and cannot be upgraded Usually, actual-time safety critical systems that required to be built based on well-planned processes.

3 0

3 years ago

A net force of 12.0 N causes an object to increase its speed from 15.0 m/s to 18.0 m/s during a 2.0 second interval. What is the

Nat2105 [25]

Answer:

Mass of object = 8kg

Explanation:

Since a= change in v/ change in t, a= (18-16)/2

= 1.5

And F=ma
Force =12
a= 1.5
m=?

You can now solve for your unknown value of mass.

8 0

3 years ago

suppose a car of 1200kg is moving with a velocity of 40km/hr therefore its kinetic energy is not zero. 1. explain briefly what h

mezya [45]

Answer:

Explanation:

For starters begin with a warning not to touch the brake drums. All of the KE is transferred to the brake drums. The result is a large rise in temperature. Heat. If you press hard on the brakes, rubber is left on the road and there is heat involved in that too.

8 0

3 years ago

Read 2 more answers

The 2nd largest hailstone every measured fell in Aurora, Nebraska, in 2003. The circumference of that hailstone was 16 inches. U

8_murik_8 [283]

Answer:

1. What was the diameter of the hailstone in inches_5.09_ and in cm___12.92___ and in feet ____0.42___?

2. What was the total volume of the hailstone in cubic inches___68.64___ and cubic feet____0.03____?

3. What was the fall velocity of this hailstone in m/s_____2.584____ and in mph___5.78_____?

Explanation:

1. If the circumference (L) of the stone is 16 inches, then from the following equation

$L = 2\pi R$

$R = \frac{L}{2\pi} = \frac{16}{2\pi} = 2.54 ~inches$

$D = 2R = 5.09 ft$

1 inch = 2.54 cm = 0.08 ft, so 5.09 inches = 12..92 cm = 0.42 ft

2. The total volume is

$V = \frac{4}{3}\pi R^3 = \frac{4}{3}\pi (2.54)^3 = 68.64~in^3\\68.64 ~in^3 = 0.03~ft^3$

3. The fall velocity is V = kd, where k = 20 if d is in cm. Let's calculate the fall velocity in cm.

$V = 20*12.92 = 258.4~cm/s = 2.584~m/s$

2.584 m/s = 5.78 mph

4 0

3 years ago