Perception of color is determined by the wavelength of light that an object reflects

What signs could indicate that you are pushing your body too far?

dem82 [27]

Answer:It's important to listen to your body and what it's really saying. Don't listen, and your exercise could wind up working against you, actually triggering muscle loss and fat gain. Plus, pushing too hard comes with a huge risk of injury-and all of your training won't do you much good if you're sidelined on race day.

Explanation:

7 0

3 years ago

Any four difference between velocity and acceleration

pychu [463]

Answer:

https://physicsabout.com/acceleration-and-velcoity/

7 0

3 years ago

A holiday ornament in the shape of a hollow sphere with mass M = 1.50×10−2 kg and radius R = 5.50×10−2 m is hung from a tree lim

pickupchik [31]

Answer:

T = 0.607 seconds

Explanation:

Given:

Mass, M = 1.50 × 10⁻² kg

Radius, R = 5.50 × 10⁻² m

Now,

the time period in terms of moment of inertia is given as:

$T = 2\pi\sqrt\frac{I}{mgR}$ .....................1

where, T is the time period

g is the acceleration due to gravity

I is the moment of inertia

Now,

Moment of inertia, I is given as:

$I = \frac{5mR^{2}}{3}$

on substituting the moment of inertia in the equation 1, we get

$T = 2\pi\sqrt\frac{\frac{5mR^{2}}{3}}{mgR}$

or

$T = 2\pi\sqrt\frac{{5R}}{3g}$

on substituting the valeus, we get

$T = 2\pi\sqrt\frac{{5\times5.50\times10^{-2}}}{3\times9.8}$

or

T = 0.607 seconds

Hence, the time period is 0.607 seconds

5 0

3 years ago

The position-time graph for a bug crawling along a line is shown in item 4 below. Determine whether the velocity is positive, ne

Naddika [18.5K]

Answer: The velocity at different marked time points are given as

t1 = -

t2 = +

t3 = +

t4 = -

t5 = 0

Explanation:

The slope of the tangent of the curve indicates the instantaneous velocity. So if the slope of the tangent is positive, that Is, the tangent makes a positive angle (above the horizontal axis) with the horizontal

axis, then the velocity at this point is positive, and if the slope of the tangent is negative, that is the tangent makes a negative angle with the horizontal axis (below the horizontal axis), then the velocity at this point is negative.

When the tangent of the line is parallel to the horizontal axis, the velocity is 0.

From the position-time graph attached, the sign on the instantaneous velocity for each time marked on the graph is given below

t1 = -

t2 = +

t3 = +

t4 = -

t5 = 0

QED!

5 0

3 years ago

Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous plan

ZanzabumX [31]

From my research, the image supports the question. From the graph given, we can construct the equation of the line using the two-point formula. Using the given value of 601 K, we can solve for the missing value of altitude.

y - y1 = [(y2 - y1)/(x2 - x1)](x- x1)
y - 147.52 = [ (567 - 147.54)/(78.11 - 18.4) ](x - 18.4)

Substituting y = 601 to solve for x:
601 - 147.52 = [ (567 - 147.54)/(78.11 - 18.4) ](x - 18.4<span>)
</span>x = 83

Therefore, the probe's instruments will fail at 83 kilometers.

5 0

4 years ago