Which is the longer wavelength? A.) 10 cm
B.) 10 m
C.) 10 nm
D.) 10 km

Answers

Answer 1

Answer: D.) 10 km
Out of centimeters, meters, nanometers, and kilometers. km is the longest

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The theoretical line perpindicular to the surface where a light ray hits a mirror is called the

Answers

That's called the "normal" to the surface at that point.

The kinetic energy of all the particles in a given sample of matter is the same.a. True
b. False

Answers

It's B.
It's never going to be true UNLESS you cooled the entire thing to below zero then it could be true.

Which type of sedimentary rock is formed from fragments of minerals or rocks?A. Caustic
B. Clastic
C. Intrusive
D. Organic

Answers

B.) Clastic ;;;;;;;;

The anser is Clastic

What happens during a muscle contraction

Answers

Answer:

What happens during a muscle contraction?

During a muscle contraction, the sliding of the filaments pulls the Z discs of a sarcomere closer together, then shortens the sarcomere. This is when muscle contraction happens!

Hope this helps! :)

Please mark brainliest

Which of the following describes the measure of current? a. The quality of the charge flow
b.The rate at which charge flows
c. The ability for something to have a charge flow
d.The potential for a charge to flow

Answers

Current is defined as the rate at which charge flows. The quantity that is current is directly affected by the voltage and the resistance of the circuit, where current is directly proportional to the voltage, and inversely to the resistance.

Among the choices, the correct answer is B.

Suppose a spacecraft orbits the moon in a very low, circular orbit, just a few hundred meters above the lunar surface. The moon has a diameter of 3500 km, and the free-fall acceleration at the surface is 1.6m/s2. How fast is this spacecraft moving? A. 53 m/s
B. 75 m/s
C. 1700 m/s
D. 2400 m/s

Answers

Spacecraft will be moving in 1700 m/s.

Option C

Explanation:

The diameter of the moon is 3500 km and the free fall acceleration at the surface is given as $1.6\ \mathrm{m} / \mathrm{s}^2$

The radius will be half of the diameter of the moon that can be written as:

$r_{\text {moon }}=1.75 * 10^(6)$

By the application of the equation for orbit speed, we get

$\begin{aligned}&v_{\text {orbit}}=√(r * q)\n&v_{\text {orbit}}=\sqrt{\left(1.75 * 10^(6)\right) *\left(1.6\ \mathrm{m} / \mathrm{s}^(2)\right)}\n&v_{\text {orbit}}=1700\ \mathrm{m} / \mathrm{s}\end{aligned}$

Final answer:

The spacecraft is moving at approximately 1700 m/s.

Explanation:

The speed of the spacecraft can be calculated using the formula for the orbital speed of an object:

V = sqrt((G * M) / r)

Where V is the velocity, G is the gravitational constant (approximately 6.67 x 10^-11 N m²/kg²), M is the mass of the moon (approximately 7.35 x 10^22 kg), and r is the radius of the moon plus the altitude of the spacecraft.

Plugging in the known values, we have:

V = sqrt((6.67 x 10^-11 N m²/kg²) * (7.35 x 10^22 kg) / (3.5 x 10^6 m + 200 m))

Calculating the square root of this expression gives us approximately 1700 m/s.