An acid is a substance or compound that releases hydrogen ions (H+) when in solution. In a strong acid, such as hydrochloric acid (HCl), all hydrogen ions (H+), and chloride ions (Cl-) dissociate (separate) when placed in water and these ions are no longer held together by ionic bonding.

6 0

3 years ago

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The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 58-m-diameter loop

dedylja [7]

Answer:

16.87 m/s

Explanation:

To find the speed of the car at the top, when the normal force is equal the gravitational force, we just need to equate both forces:

$N = P$

$m*a_c = mg$

$a_c$ is the centripetal acceleration in the loop:

$a_c = v^2/r$

So we have that:

$mv^2/r = mg$

$v^2/r = g$

$v^2 = gr$

$v = \sqrt{gr}$

So, using the gravity = 9.81 m/s^2 and the radius = 29 meters, we have:

$v = \sqrt{9.81 * 29}$

$v = \sqrt{284.49} = 16.87\ m/s$

The speed of the car is 16.87 m/s at the top.

5 0

3 years ago

Which is NOT a subatomic particle

Novay_Z [31]

Answer:

both proton and neutron are subatomic particle

Explanation:

hope this helps u stay safe

6 0

4 years ago

Wavelength is measured in hertz true or false?

g100num [7]

Wavelength is measured in various units of distance (mm, cm, m, etc.). Frequency uses hertz, but that is not what the question is asking. Therefore, the answer is false.

3 0

3 years ago