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3 years ago

Which word is not a good way to describe exercise?

1 answer:

3 0

In my opinion, calling exercise "work" wouldn't be a good way of describing it, I don't think people would exercise if its called work

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The amount of air resistance acting on an object depends on the objects

alexandr402 [8]

Answer:

Shape of the object

Explanation:

This depends on the shape of the object. For a spherical object, a unitless value of 0.47 is typical. The magnitude of the velocity squared. The faster you go, the greater the air resistance force

7 0

2 years ago

To practice Problem-Solving Strategy 15.1 Mechanical Waves. Waves on a string are described by the following general equation y(

NeX [460]

Answer:

The transverse displacement is $y(1.51 , 0.150) = 0.055 m$

Explanation:

From the question we are told that

The generally equation for the mechanical wave is

$y(x,t) = Acos (kx -wt)$

The speed of the transverse wave is $v = 8.25 \ m/s$

The amplitude of the transverse wave is $A = 5.50 *10^{-2} m$

The wavelength of the transverse wave is $\lambda = 0540 m$

At t= 0.150s , x = 1.51 m

The angular frequency of the wave is mathematically represented as

$w = vk$

Substituting values

$w = 8.25 * 11.64$

$w = 96.03 \ rad/s$

The propagation constant k is mathematically represented as

$k = \frac{2 \pi}{\lambda}$

Substituting values

$k = \frac{2 * 3.142}{0. 540}$

$k =11.64 m^{-1}$

Substituting values into the equation for mechanical waves

$y(1.51 , 0.150) = (5.50*10^{-2} ) cos ((11.64 * 1.151 ) - (96.03 * 0.150))$

$y(1.51 , 0.150) = 0.055 m$

4 0

3 years ago

A pulse of ultrasound is sent into the womb. It travels at a speed of 1500m/s in soft tissue and is reflected off the skull of t

erma4kov [3.2K]

D=vt use this equation to get the depth of the skull

8 0

2 years ago

A population is comprised of all one species, whereas a ___________ is made up of many of these.

miv72 [106K]

Answer: Ecosystem

Explained: There's a minimum word count I'm filling up, don't mind me.

5 0

3 years ago

A train travels 160 km in 2 h. What is the train’s average speed in km/h?

loris [4]

The train’s average speed is 80km/h

3 0

3 years ago

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