When you pull back a sling shot, it has ________ energy because letting go of it will cause it to move.

If you see a rainbow near the time of sunset, where in the sky will the rainbow be?

Igoryamba

Closest to the sun f thats a choice or closest to the atmoshpere

8 0

4 years ago

A 20 cm long spring is attached to a wall. The spring stretches to a length of 22 cm when you pull on it with a force of 100 n.

kenny6666 [7]

Answer:

5000 N/m

Explanation:

Hooke's law for the spring is

$F = k \Delta x$

where here we have

F = 100 N is the force applied to the spring

k is the spring constant

$\Delta x = 22 cm - 20 cm = 2 cm = 0.02 m$ is the stretching of the spring with respect to its equilibrium position

Solving the equation for k, we find the spring constant:

$k=\frac{F}{\Delta x}=\frac{100 N}{0.02 m}=5000 N/m$

8 0

4 years ago

What happens when electrical devices are added to the circuit ?

Ksivusya [100]

Answer:

they get power.

Explanation:

7 0

3 years ago

Falling objects drop with an average acceleration of 9.8 m/s2. An arrow is shot with a velocity of 11.76 m/s straight down from

In-s [12.5K]

Answer:

3.8 secs

Explanation:

Parameters given:

Acceleration due to gravity, g = 9.8 $m/s^2$

Initial velocity, u = 11.76 m/s

Final velocity, v = 49 m/s

Using one of Newton's equations of linear motion, we have that:

$v = u + gt$

where t = time of flight of arrow

The sign is positive because the arrow is moving downward, in the same direction as gravitational force.

Therefore:

$49 = 11.76 + 9.8*t\\\\\\\49 - 11.76 = 9.8t\\\\=> 9.8t = 37.24\\\\\\t = \frac{37.24}{9.8} \\\\\\t = 3.8 secs$

The arrow was in flight for 3.8 secs

6 0

4 years ago

Which of these statements is true? controlled data produces valid experiments. controlled experiments produce valid data. valid

Brums [2.3K]

Each of the choices may be considered right depending on the use of context or on how terms are defined, but the one that is most correct is:

"Controlled experiments produce valid data"

Controlled experiments are experiments in which factors which are not the interest of the study or which are not being studied are controlled or accounted for in the design, so that resulting data are less likely to be caused by some anomaly or by some variable other than those being studied. In usual research scenarios it is not the data itself that is acted upon in the <span>experiment - it is the experiment itself, the factors and the physical processes that will eventually yield data.</span>

6 0

3 years ago