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NikAS [45]
3 years ago
8

Estimate the weight of a 1000kg car that is accelerating at 3m/s/s

Physics
1 answer:
Nimfa-mama [501]3 years ago
7 0

Answer:

3000N

Explanation:

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If a car travels 200 meters in 10 seconds, what is the speed of the car?
Katarina [22]
Speed = d/t
d = 200, t = 10
200/10 = 20
Solution: 20 m/s
8 0
3 years ago
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1. Some ripples spread across a pond with a frequency of 5 Hz. How much would be the period of these ripples.
Scilla [17]

1)The period of these ripples will be 0.2 sec.

2)The time period of sound wave will be 100 Hz.

3)The frequency of the sound wave will be 5×10⁶ Hz.

<h3>What is frequency?</h3>

Frequency is defined as the number of repetitions of a wave occurring waves in 1 second.

Frequency is given by the formula as,

Frequency of  ripples (f₁)=5 Hz

The period of these ripples will be;

T₁=1/f₁

T₁=1/5

T₁=0.2 sec

The time period of sound wave (T)=0.01 seconds

The time period of sound wave;

f=1/T

f=1/0.01

f=100 Hz

Time period of A radio wave = 0.0000002 seconds

The frequency of the sound wave is;

f=1/T

f=1/0.0000002

f=5×10⁶ Hz

Hence,the period of these ripples will be 0.2 sec.

To learn more about the frequency, refer to the link;

brainly.com/question/14926605

#SPJ1

6 0
3 years ago
Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of shaft power. The free surface of t
kifflom [539]

Answer:

6.5 kW

Explanation:

Input power = 20 kW = 20000 W

h = 45 m

Volume flow per second = 0.03 m^3 /s

mass flow per second = volume flow per second x density of water

                                    = 0.03 x 1000 = 30 kg/s

Output power = m g h / t = 30 x 10 x 45 = 13500 W

Power converted in form of heat = Input power - Output power

                                                       = 20000 - 13500 = 6500 W = 6.5 kW

Thus, mechanical power converted into heat is 6.5 kW.

7 0
4 years ago
A coiled spring with coils that are closely spaced then widely then closely then widely then closely, ending with a yellow line
liberstina [14]

Answer:

2, sorry I'm late but my answer is right, I just took the quiz

4 0
3 years ago
Read 2 more answers
Calcular la aceleracion resultante de una particula que gira a 5Hz y su radio de giro es de 50 cm
DiKsa [7]

Answer:

a_C=12.5\frac{m}{s^2}

Explanation:

Hola.

En este caso, dado que conocemos la frecuencia con la que la particula gira (ω), 5 Hz o 5 giros de radio de 50 cm (0.5 m) cada uno en 1 segundo, podemos calcular la aceleración centrípeta con:

a_C=\omega^2 r

a_C=(\frac{5}{s})^2*0.5m\\ \\a_C=\frac{25}{s^2} *0.5m\\\\a_C=12.5\frac{m}{s^2}

¡Saludos!

3 0
3 years ago
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