All categories

2 years ago

A girl, standing 150m in front of a tall building, fires a shot using a starting pistol. A boy, standing

Physics

1 answer:

Tems11 [23]2 years ago

8 0

Answer:

I believe 650 or C

Explanation:

plz mark brainnlyist :)

You might be interested in

In the classic 1960s science-fiction comic book The Atom, a physicist discovers a basketball-sized meteorite (about 12 cm in rad

kirill [66]

This app is broken but

7 0

3 years ago

The drawings show three examples of the force with which someone pushes against a vertical wall. In each case the magnitude of t

Monica [59]

Complete Question

The complete question is shown on the

Answer:

The ascending order would be 2nd < 1st < 3rd

Explanation:

Generally the the Normal force is mathematically represented as

$Normal \ Force = Fsin \theta$

=> $Normal \ Force \ \alpha \ sin \theta$

For the first drawing the value $\theta$ is between that of the the second and the third drawing so the Normal force would also be between the normal forces of the second and the third drawing

For the second drawing whose value of $\theta$ is less than that of the first and the third the normal force would also be less than that of the first and third

For the the third drawing whose value is (90°) which is higher than the first and the second the normal force would also be higher than the first and the second

4 0

2 years ago

Read 2 more answers

3. Given f(x) = x2 - 5x+3, then<br>A. f(-1) = -3<br>b. f(-1) = 7<br>f(-1) = -1<br>d. f(-1) = 9

Phantasy [73]

Answer:

$f(x) = {x}^{2} - 5x + 3 \\ f( - 1) = {( - 1)}^{2} - 5( - 1) + 3 \\ = 9$

7 0

3 years ago

Five metals that are more useful for electroplating

Radda [10]

5 meteals that are more useful for electroplating carbon,seth,

6 0

3 years ago

Two sound waves (speed 343 m/s) have different wavelengths. The first has a wavelength of 5.72 m, and the second a wavelength of

lys-0071 [83]

Answer:

The beat frequency is 30 Hz

Explanation:

Given;

velocity of the two sound waves, v = 343 m/s

wavelength of the first wave, λ₁ = 5.72 m

wavelength of the second wave, λ₂ = 11.44 m

The frequency of the first wave is calculated as follows;

F₁ = v/λ₁

F₁ = 343 / 5.72

F₁ = 59.97 HZ

The frequency of the second wave is calculated as follows;

F₂ = v/λ₂

F₂ = 343 / 11.44

F₂ = 29.98 Hz

The beat frequency is calculated as;

Fb = F₁ - F₂

Fb = 59.97 HZ - 29.98 Hz

Fb = 30 Hz

6 0

3 years ago