Which of Newton's laws best explains why

Which three terms are needed to describe the energy a BASE Jumper has as

STatiana [176]

A Potential (as she is off the ground she has gravitational potential energy)
B kinetic (because she’s moving down)
and
C gravitational (as gravity is pulling her back down)

4 0

3 years ago

Neutralization is an important part of digestion. Why?

Anarel [89]

It's Breaks Away The Proteins And Nutrients That Your Body Would Use

5 0

3 years ago

Two musicians are comparing their trombones. The first produces a tone that is known to be 438 hz. When the two trombones play t

beks73 [17]

Answer:

The second trombones might produce frequency of 435 Hz or 441Hz.

Explanation:

Beat frequency is defined as number of beats produced per second and numerically equal to the difference between the frequency of super imposing waves.The sound waves interfere constructively.

Beat is the phenomena of interference.

The frequency of the resultant wave is given by

F = f₁ - f₂ eqn 1

where f₁ , f₂ are frequency of waves.

The frequency of first trombones is 438Hz, 6 beats are heard every 2 second,

Beat frequency is F = $\frac{6}{2}$ = 3Hz.

Substituting in eqn 1 , we get two possible solution for frequency of second trombones.

f₂ =f₁ -F = 438 -3 =435Hz

f₂ = f₁ +F = 438+3 =441 Hz.

The second trombones might produce frequency of 435 Hz or 441Hz.

7 0

4 years ago

The resistivity of iron is 1 x 10 -7 Ωm. The resistance of a iron wire of particular length and thickness is 1 ohm. If the lengt

Tatiana [17]

Answer:

2×10⁻⁷ Ωm

Explanation:

From the question,

R = 4ρL/πd².................... Equation 1

Where R = Resistance of the wire, ρ = resistivity of the wire, L = length of the wire, d = diameter of the wire.

Therefore,

ρ = Rπd²/4L............. Equation 2

Given: R = 1 ohm, ρ = 1×10⁻⁷Ωm

1×10⁻⁷ = πd²/4L.................... Equation 3

If the length and the diameter are doubled, and the resistance remaining constant

ρ' = π(2d)²/4(2L)

Where ρ' = new resistivity

ρ' = 4πd²/8L

ρ' = 2πd²/4L = 2ρ

ρ' = 2(1×10⁻⁷)

ρ' = 2×10⁻⁷ Ωm

7 0

4 years ago

Un avión de rescate en Alaska deja caer un paquete de provisiones a un grupo de exploradores extraviados. Si el avión viaja hori

posledela

Answer:

180.4 m

Explanation:

The package in relation to the point where it was released falls a certain distance that is calculated by applying the horizontal motion formulas , as the horizontal speed of the plane and the height above the ground are known, the time that It takes the package to reach its destination and then the horizontal distance (x) is calculated from where it was dropped, as follows:

$V_{ox}=v_x = 40 \ m/s$