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3 years ago

What characteristic of waves is defined as the number of waves that pass a given point per unit time?

Physics

1 answer:

kumpel [21]3 years ago

3 0

Answer:

frequency

Explanation:

freq is basically the change ..the change will be in any thing..eg we say change in amplitude w r t time ,, how rapidly the amplitude change ..

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A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 11.5 m/s and accelerates

elena-14-01-66 [18.8K]

Answer:

given,

initial velocity = 11.5 m/s

acceleration = 0.5 m/s²

time = 7 s

a) using equation of motion

v = u + a t

v = 11.5 + 0.5 × 7

v = 15 m/s

b) $s = u t + \dfrac{1}{2}at^2$

$s = 11.5\times 7 + \dfrac{1}{2}\times 0.5\times 7^2$

s = 92.75 m

distance traveled by racer with final velocity

d = 300 - 92.75

= 207.25 m

time spend to travel 207.25

$t = \dfrac{207.25}{15}$

t = 13.82 s

total time spent to travel 300m

t = 7 + 13.82

t = 20.82 s

time required to travel 300 m with initial velocity

$t_0 =\dfrac{d}{v_0}$

$t_0 =\dfrac{300}{11.5}$

= 26.09 s

time saved due to acceleration

t = 26.09 - 20.82 = 5.27 s

c) second racer is 5 m apart from the first one

distance traveled by the second racer till first one finishes the race

$d_2 = v_2t$

$d_2 = 11.8\times 20.82 = 245.676 m$

distance behind the leader

d = 300 -5 -245.676 = 49.34 m

time behind the winner

$t_f = \dfrac{d}{v_2} =\dfrac{49.34}{11.8} = 4.18 s$

8 0

3 years ago

The three major types of muscle in the body are Smooth, Cardiac, and Skeletal.

Sunny_sXe [5.5K]

Answer:

True

Explanation:

Smooth = The tissue that is allowed to make the muscle

Cardiac = The layer that protects the heart and makes the heart stronger

Skeletal = The Bones In Your Body Allows For picking up heavy stuff if the muscles/bones grow

7 0

2 years ago

4) A football player starts at the 40-yard line, and runs to the 25-yard line in 2 seconds.

VMariaS [17]

Answer:

(a). Their speed during that run is 10 m/s.

(b). Their velocity is 6.86 m/s

(c). The final position is at 8.91 m.

Explanation:

Given that,

A football player starts at the 40-yard line, and runs to the 25-yard line in 2 seconds.

Suppose, the distance between 40 yard line and 25 yard line is 20 yard.

(a). We need to calculate their speed during that run

Using formula of speed

$v=\dfrac{d}{t}$

Where. d = distance

t = time

Put the value into the formula

$v=\dfrac{18.288}{2}$

$v=10\ m/s$ during that run

(b). We need to calculate their velocity

Using formula of speed

$v=\dfrac{\Delta d}{\Delta t}$

Put the value into the formula

$v=\dfrac{22.86-36.58}{2}$

$v=-6.86\ m/s$

Negative sign shows the direction of motion.

(c). If they kept running at that velocity for another 1.3 seconds,

We need to calculate the final position

Using formula of position

$d=vt$

Put the value into the formula

$d=6.86\times1.3$

$d=8.91\ m$

Hence, (a). Their speed during that run is 10 m/s.

(b). Their velocity is 6.86 m/s

(c). The final position is at 8.91 m.

8 0

3 years ago

GIVING BRAINLIEST FIVE STARS AND 25 POINTS!

Ne4ueva [31]

Engines can overheat for many reasons. In general, it's because something's wrong within the cooling system and heat isn't able to escape the engine compartment. The source of the issue could include a cooling system leak, faulty radiator fan, broken water pump, or clogged coolant hose.

Hope it helps! Have a nice day or night!

4 0

3 years ago

Read 2 more answers

What is the new acceleration (in m/s/s)?

Delicious77 [7]

The new acceleration is $108 m/s^2$