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Mekhanik [1.2K]
3 years ago
6

Help me with this please

Physics
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

i dont understand, can you put it in word form please.

Explanation:

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a ball on a string makes 30.0 revolutions in 14.4s, in a circle of radius 0.340m. what is its period.(unit=s)
STALIN [3.7K]

Answer:

0.480 seconds

Explanation:

The period is the time for 1 revolution.  Writing a proportion:

14.4 s / 30.0 rev = t / 1 rev

t = 0.480 s

The period is 0.480 seconds.

7 0
3 years ago
A microwave oven operates with sinusoidal microwaves at a frequency of 2400 mhz. the height of the oven cavity is 25 cm and the
Natali [406]
It takes Δt time to travel the Em wave which is on top of the microwave to bottom of the microwave.
Δt = h/c
P = E / Δt = cE/h
P = 3× 10⁸ ₓ 0.5  10⁻⁶ / 0.25
600w.
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3 years ago
Vector may be zero .why?​
Papessa [141]

Answer:

We define a vector as an object with a length and a direction.With no length, the zero vector is not pointing in any particular direction, so it has an undefined direction.

Explanation:

Pls mark me brainliest :)

7 0
3 years ago
What is Plancks Constant? Need it ASAP
Fantom [35]

Answer:

The Planck constant, or Planck's constant, is a fundamental physical constant denoted h, and is of fundamental importance in quantum mechanics. A photon's energy is equal to its frequency multiplied by the Planck constant. Due to mass–energy equivalence, the Planck constant also relates mass to frequency.

<h3>Theory:</h3>

Planck postulated that the energy of light is proportional to the frequency, and the constant that relates them is known as Planck's constant (h). His work led to Albert Einstein determining that light exists in discrete quanta of energy, or photons.

E = hf

\sf \: h = 6.626 \times  {10}^{ - 34}  \: kg \:  {m}^{2}  {s}^{ - 1}

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3 years ago
The best method for separating an oil and water mixture would be _____.
Mice21 [21]

Answer:

The answer is density

Explanation:

8 0
3 years ago
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