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4 years ago

A rock is thrown horizontally at 10.0m/s off of a 150m sheer cliff. What is the range?

Physics

2 answers:

inn [45]4 years ago

7 0

Answer:20

Explanation:

sattari [20]4 years ago

3 0

Answer:

55.3 m

Explanation:

First, find how long it takes to land.

Given (in the y direction):

Δy = 150 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

(150 m) = (0 m/s) t + ½ (9.8 m/s²) t²

t = 5.53 s

Given (in the x direction):

v₀ = 10.0 m/s

a = 0 m/s²

t = 5.53 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (10.0 m/s) (5.53 s) + ½ (0 m/s²) (5.53 s)²

Δx = 55.3 m

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There are 11 lights in series, and they are in series with 2 lights in parallel. If the 13 lights are identical, which of them w

BlackZzzverrR [31]

<h2>Answer: 2 lights (in parallel)</h2>

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8 0

3 years ago

A spring with constant 185 N/m is compressed 1.38 m with a mass of 0.53 kg. How fast is it going 2.5 m above the ground?

I am Lyosha [343]

The velocity 2.5 m above the ground will be 49.07 m/sec.

<h3>What is spring force?</h3>

The force required to extend or compress a spring by some distance scales linearly concerning that distance is known as the spring force. Its formula is;

F = kx

The formula for force is;

F=ma

Equating both the equation;

ma = kx

a=kx/m

a=( 185 N/m × 1.38 m) / 0.53

a = 481.6 m/s²

The speed is found by Newton's third equation of motion;

v²=u²+2as

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v = 49.07 m/sec

Hence the velocity 2.5 m above the ground will be 49.07 m/sec.

To learn more about the spring force refer to the link;

brainly.com/question/4291098

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2 years ago

Problem Solving: Show your solution:

umka2103 [35]

Answer:

(a) λ = 0.1224 m

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The wavelength can be calculated with the help of the frequency of the waves. The formula utilized for this purpose is given as follows:

$\lambda = \frac{c}{f}$

where,

c = speed of light = 3 x 10⁸ m/s

λ = wavelength of the wave

f = frequency of the wave

(a)

f = 2.45 GHz = 2.45 x 10⁹ Hz

λ = ?

Therefore,

$\lambda = \frac{3\ x\ 10^{8}\ m/s}{2.45\ x\ 10^{9}\ Hz}\\$

<u></u>

(b)

f = 24 KHz = 2.45 x 10³ Hz

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3 years ago

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Dahasolnce [82]

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