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storchak [24]
3 years ago
11

The speed of sound is 343 m/s in air at room temperature. What is the wavelength of a B-flat musical note that has a frequency o

f 466 HZ? What would happen to the wave length if you increased the frequency to 932 Hz?
Physics
1 answer:
Taya2010 [7]3 years ago
4 0

Answer:

1398

Explanation:

sorry if imam wrong

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How long will it take a 50w motor to lift a 20 kg object 5 m?
weqwewe [10]

Answer:

50+20=70

70÷5=14

Explanation:

50×20=1000

1000÷5=200

5 0
1 year ago
Read 2 more answers
Two pieces of flint rock produce a visible spark
noname [10]
<span>(3) electromagnetic energy and internal energy</span>
4 0
3 years ago
What is the average speed if an object travels 200 km in 5 hours
melamori03 [73]

Answer:

40km per hour

Explanation:

8 0
2 years ago
A snowball is rolling down a hill at 4.5 m/s and accumulating snow as it goes. Its diameter begins at 0.50 m and ends at the bot
Reil [10]
To find the change in centripetal acceleration, you should first look for the centripetal acceleration at the top of the hill and at the bottom of the hill.

The formula for centripetal acceleration is:
Centripetal Acceleration = v squared divided by r

where:
v = velocity, m/s
r= radium, m

assuming the velocity does not change:

at the top of the hill:
centripetal acceleration = (4.5 m/s^2) divided by 0.25 m
                                      = 81 m/s^2

at the bottom of the hill:
centripetal acceleration = (4.5 m/s^2) divided by 1.25 m
                                      = 16.2 m/s^2

to find the change in centripetal acceleration, take the difference of the two.
change in centripetal acceleration = centripetal acceleration at the top of the hill - centripetal acceleration at the bottom of the hill

= 81 m/s^2 - 16.2 m/s^2
= 64.8 m/s^2 or 65 m/s^2
6 0
3 years ago
If your friend drops a chocolate bar to you from a height of 5.0 m above your hands,
Sladkaya [172]

Answer:

<h3>1.01 s</h3>

Explanation:

Using the equation of motion S = ut+1/2gt² to solve the problem where;

u is the initial velocity of the chocolate = 0m/s

t is the time taken

g is the acceleration due to gravity = 9.81m/s²

S is the height of fall = 5.0m

Substituting the given parameter into the formula to get the time t we have;

5 = 0(t)+1/2(9.81)t²

5 = 4.905t²

t² = 5/4.905

t² = 1.019

t = √1.019

t = 1.009 secs

<em>Hence it will take 1.01 secs for me to catch the chocolate bar</em>

6 0
3 years ago
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