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Lady_Fox [76]
3 years ago
7

Calculate the average velocity of object over the first 10 seconds of the trip

Physics
1 answer:
kirza4 [7]3 years ago
6 0

Answer:

in order to find the average velocity use  change in Displacement / change in time?

Explanation:

You might be interested in
2. A string with a length of 0.9m that is fixed at both ends
aliina [53]

Answer:

2a.) Wavelength = 1.8 m

2b.) F = 66.67 Hz

3a.) Find the attached file

3b.) Wavelength = 0.6 m

Explanation:

Given that the

Length L = 0.9m

Wavelength (λ) = 2L/n

Where n = number of harmonic

If n = 1, then

Wavelength (λ) = 2L = 2 × 0.9 = 1.8 m

b.)

 If waves travel at a speed of 120m/s on this string, what is the frequency

associated with the longest wave (first harmonic)?

Given that V = 120 m/s

V = Fλ

But λ = 2L, therefore,

F = V/2L

F = 120/1.8

F = 66.67 Hz

3. b.) If there are two node, the position will be in 3rd position which is 3rd harmonic

Using the same formula,

Wavelength (λ) = 2L/n

Where n = 3

Wavelength (λ) = 2 × 0.9/3

Wavelength (λ) = 0.6 m

3 0
3 years ago
Explain why sugar was used in this experiment. How does the experiment relate to a baker adding yeast to bread to make it rise?
tia_tia [17]

Answer:

Yeast can use oxygen to release the energy from sugar (like you can) in the process called "respiration". ... So, the more sugar there is, the more active the yeast will be and the faster its growth (up to a certain point - even yeast cannot grow in very strong sugar - such as honey).

7 0
2 years ago
HELP PLEASE NOWWWW !!!! ( 1 )   Jill and Scott both road their bikes for 30 minutes.  Jill traveled 5 kilometers and Scott trave
katovenus [111]

#1

Jill and Scott both moves for 30 minutes

now if Jill cover 5 km distance and Scott cover 10 km distance

now we know that the formula of speed is given as

speed = \frac{distance}{time}

now we will have

speed of Jill

v = \frac{5}{0.5} = 10 km/h

speed of Scott

v = \frac{10}{0.5} = 20 km/h

so correct answer here is

<em>Scott had the faster speed since he rode at 20 k/h while Jill only traveled 10 km/h.</em>

<em>#2</em>

distance travelled by each car is given as

d = 400 miles

now here it is given that

time taken by green car

t_1 = 10 hours

time taken by yellow car

t_2 = 8 hours

now we can find the speed of two cars

speed = \frac{distance}{time}

speed of green car

v = \frac{400}{10} = 40 mph

speed of yellow car

v = \frac{400}{8} = 50 mph

so correct answer will be

<em>The yellow car was faster.  Yellow traveled at a speed of 50 mph while green was traveling at an average of 40 mph.</em>

6 0
3 years ago
Read 2 more answers
Why is it less air pressure up in the sky and why does it affect our ears
IgorLugansk [536]

Answer:

When you in a airplane you are in high altitude and thats where air density drops. Thats where ear pops come from.

Explanation:

8 0
2 years ago
Humans can hear frequencies as low as 21 Hz. If sound is measured during 3 seconds how many wavelengths pass?
SVEN [57.7K]
63 hertz.
This is because a hertz is how often a sound wave repeats.
8 0
4 years ago
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