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yanalaym [24]
4 years ago
14

Amy counts the wave crest traveling down a stretched string five wave crests pass Amy in two seconds what is the frequency of th

e wave
Physics
1 answer:
Gwar [14]4 years ago
8 0
<span>One end of a uniform meter stick is placed against a vertical wall. The other end is held by a lightweight cord that makes an angle, theta, with the stick. The coefficient of static friction between the end of the meter stick and the wall is 0.390. A. what is the maximum value...</span>
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A steel cable lying flat on the floor drags a 20 kg block across a horizontal, frictionless floor. A 110 N force applied to the
sammy [17]

Answer:

The mass of the cable is 4.94 kg                                                                                                                                                                            

Explanation:

It is given that,

Mass of the block, m = 20 kg

Force applied to the cable, F = 110 N

Speed of the block, v = 4.2 m/s

Distance, d = 2 m

Let a is the acceleration of the block. It can be calculated using the third equation of motion as :

v^2-u^2=2ad

(4.2)^2-(0)^2=2a\times 2

a=4.41\ m/s^2

Let m' is the mass of the cable. It can be calculated using the second law of motion as :

m'=\dfrac{F}{a}-m

m=\dfrac{110\ N}{4.41\ m/s^2}-20

m = 4.94 kg

So, the mass of the cable is 4.94 kg. Hence, this is the required solution.

5 0
3 years ago
PLEASE HELP!!!!
Aleks [24]
The answer is step by step 65
4 0
3 years ago
Read 2 more answers
Three samples of gas each exert 740. mm Hg in separate 2 L containers. What pressure do they exert if they are all placed in a s
Usimov [2.4K]
According to Dalton's law of partial pressure, the total pressure exerted is simply equal to the sum of the partial pressures of the individual gases. Given that all three samples of gas each exert 740 mmHg, when they are placed in a single 2 L container, they exert a pressure of 2220 mmHg on the container which is the sum of their individual pressures. 
5 0
4 years ago
What properties does a loud, shrill whistle have? a.) high amplitude, high frequency
marysya [2.9K]

Answer:

a.) high amplitude, high frequency

Explanation:

Frequency and amplitude are properties of sound. Varying these properties changes how people perceive sound.

While hearing sound of a particular frequency we call it pitch i.e., the perception of a frequency of sound.

High pitch means high frequency and high frequency is perceived to have a shrill sound.

The loudness of a sound is measured by the intensity of sound i.e., the energy the sound possesses per unit area. As the amplitude increases the intensity increases. So, a loud sound will have higher density.

Hence, the loud shrill whistle will have high frequency and high amplitude.

4 0
3 years ago
Explain how temperature changes affect the ice on a lake ?
KengaRu [80]
Well if it gets warmer the ice will weaken and if it gets hot enough will melt. Of course if the weather gets colder the ice will thicken.
7 0
4 years ago
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