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disa [49]
3 years ago
12

50 POINTS AND BRAINLY!

Physics
1 answer:
Shkiper50 [21]3 years ago
7 0

Answer:

a,= 1m/second. b,= 0m/ second ( constance,no movement)

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A corvette starts from rest and travels 69.0 meters in 50 s. What is its acceleration?
devlian [24]

Answer:

0.0552 m/s²

Explanation:

Given:

Δx = 69.0 m

v₀ = 0 m/s

t = 50 s

Find: a

Δx = v₀ t + ½ at²

69.0 m = (0 m/s) (50 s) + ½ a (50 s)²

a = 0.0552 m/s²

4 0
3 years ago
calculate the gravitational force in between two objects of mass 25 kg and 20 kg if distance between them is 5m ​
sladkih [1.3K]

Answer:

<em><u>Gravitational</u></em><em><u> </u></em><em><u>force</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>1</u></em><em><u>.</u></em><em><u>3</u></em><em><u>3</u></em><em><u> </u></em><em><u>×</u></em><em><u> </u></em><em><u>1</u></em><em><u>0</u></em><em><u>^</u></em><em><u>-</u></em><em><u>9</u></em><em><u> </u></em><em><u>N</u></em>

Explanation:

force =  \frac{GMm}{ {r}^{2} }

{ \sf{ =  \frac{6.67 \times  {10}^{ - 11} \times 25 \times 20 }{ {5}^{2} } }} \\  \\  = { \sf{1.33 \times  {10}^{ - 9} \: newtons }}

5 0
3 years ago
If the speed of light is 3.0 × 108 m/s2, then how much energy would be released if a 23.7 gram object is converted to pure energ
elena55 [62]

7.11x 10⁶J

Explanation:

Given parameters:

Speed of light  = 3 x 10⁸m/s

Mass of object = 23.7g = 0.0237kg

Unknown:

Energy = ?

Solution:

From Einstein's equation, we see that mass and energy are equivalent using the expression below:

                                  E = mc²

Substituting the parameters:

                 E = 3 x 10⁸ x 0.0237 = 7.11x 10⁶J

Learn more:

Energy brainly.com/question/5381158

#learnwithBrainly

3 0
4 years ago
A certain sound contains the following frequencies: 400 Hz, 1600 Hz, and 2400 Hz. Select the best description of this sound View
julsineya [31]

Answer:

b)

Explanation:

The 3 frequencies found in the sound waveform (400, 1600, and 2400 Hz are related between them, being 400 Hz the fundamental frequency of the sound, and 1600 Hz and 2400 Hz, harmonics (overtones of the fundamental) according to this relationship:

1600 Hz = 4* 400 Hz (4th Harmonic)

2400 Hz = 6* 400 Hz (6th Harmonic)

3 0
4 years ago
element X has two isotopes: X-27 and x-29. x-27 has an atomic mass of 26.975 and a relative abundance of 82.33%, and X-29 has an
GalinKa [24]

Answer:

27.34 (no unit)

Explanation:

26.975*82.33%+29.018*17.67%

=27.34

7 0
3 years ago
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