All categories

3 years ago

How do intensity, frequency, and time affect physical fitness?

1 answer:

5 0

Important bc it makes it more effective, the specific rate makes or breaks the fitness. Frequency is important to allow your body to rebuild and repair the damage from working out, it allows the body to adapt and time for rest/ healing. Intensity depends on how much your body breaks so the recover time and frequency must be adjusted. Time effects because of the distance between frequencies which plays a role.

You might be interested in

explain which properties of metals make sterling silver the best material for you to create hammered earrings.

Assoli18 [71]

Answer:

maliebility

Explanation:

this property allow us to beat a metal to sheets

3 0

3 years ago

a force of 5 N extends a spring of natural length 0.5m by 0.01, what will be the length of the spring when the applied force is

vova2212 [387]

Answer:

L_new =L+x^2 = L_new = 0.54_m.

Explanation:

Given data:

Force in the first case,

F_1 = 5N

Force in the second case,

F_2 = 20 N

Natural length of spring,

L= 0.5

Extension in the first case,

x_1 = 0.01m

Let the force constant of the spring be k.

Thus,

F_1=kx_1

5 = k × 0.01

⇒ k = 500 N/m.

The extension in the spring in the second case can be given as,

F_2=kx_2

20 = 500x_2

⇒ x_2 = 0.04 m.

Thus, the effective length of the spring would be,

L_new =L+x^2

L_new = 0.5+0.04

L_new = 0.54_m.

5 0

3 years ago

A motorcyclist travels around a curved path that has a radius of 350 ft. While traveling around the curved path, the motorcyclis

Ilya [14]

Answer:

A) t = 29.3 s

B) V = 58.56 ft/s

C) a_net = 2.3 ft/s²

Explanation:

A) The formula for radial acceleration is given as;

a_c = V²/R

We are given;

Radius;R = 350 ft

So, a_c = V²/350

Where V is velocity

Tangential acceleration;a_t = 2 ft/s²

Formula for net acceleration is;

a_net = √((a_c)² + (a_t)²)

We are given a_net = 10 ft/s²

Thus;

10 = √(V²/350)² + (2²)

10² = V⁴/350² + 4

100 - 4 = V⁴/350²

96 × 350² = V⁴

V = 58.56 ft/s

Now, formula for angular velocity is;

ω = V/r

ω = 58.56/350

ω = 0.1673 rad/s

Angular acceleration is given by;

α = a_t/r

α = 2/350

α = 0.00571 rad/s²

Time needed will be gotten from the formula;

t = ω/α

t = 0.1673/0.00571

t = 29.3 s

B) we are told total acceleration is 10 ft/s², thus it's the same as velocity gotten earlier which is 58.56 ft/s

C) we are told that the speed is now 20 ft/s

Thus;

a_c = 20²/350

a_c = 1.1429 ft/s²

Since a_net = √((a_c)² + (a_t)²)

We are given a_t = 2 ft/s²

Thua;

a_net = √(1.1429² + 2²)

a_net = √5.30622041

a_net = 2.3 ft/s²

6 0

3 years ago

The James Webb Space Telescope (JWST) will allow us to look back in time and observe the early universe. You are a scientist try

ioda

This is because red color has higher wavelength and it can clear universe and our atmosphere better,

This has the same reason as how we can see only red color during sunset.

$\boxed{\sf z=\dfrac{ \lambda-\lambda_o}{\lambda_o}}$

lambda_o be x

Put values

$\\ \rm\Rrightarrow 7.6=\dfrac{2\times10^{-6}-x}{x}$

$\\ \rm\Rrightarrow 7.6=\dfrac{2\times 10^{-6}}{x}-1$

$\\ \rm\Rrightarrow 8.6=\dfrac{2\times 10^{-6}}{x}$

$\\ \rm\Rrightarrow x=0.23\times 10^{-6}m$

$\\ \rm\Rrightarrow x=0.23\mu m$

5 0

2 years ago

Describe four energy changes that happen in the process.

musickatia [10]

Driving a motor........

chemical energy is converted into kinetic energy.

Falling off of cliff

.........gravitational potential energy is converted into kinetic energy.

Hydroelectric energy generation

.......gravitational potential energy is converted into kinetic energy (i.e. driving a generator), which is then converted into electrical energy.

Nuclear power generation

.........mass is converted into energy, which then drives a steam turbine, which is then converted into electrical energy.

7 0

3 years ago