Genetics is the most important factor that affects your physical fitness.<br> a. True<br> b. False

Explain the difference in how particles are arranged in a solid,liquids and gases

3241004551 [841]

Answer:

hope this helps

Explanation:

solid particles are arranged according to the size of the object

while liquid particles are arranged how they move freely together in the object they are in.

while gas particles are arranged scatterly like they spread.

3 0

3 years ago

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g A raindrop charged to 10 mC experiences electric field of 10,000 V/m from a tip of a tree branch. What is the electric force a

Andrews [41]

Answer:

The electric force acting on the raindrop is 100 N.

Explanation:

Given;

charge of the raindrop, Q = 10 mC = 0.01 C

electric field strength, E = 10,000 V/m = 10,000 N/C

The force acting on the raindrop is given as;

Electric Force = electric field strength x charge of the raindrop

F = EQ

F = (10,000 N/C) (0.01 C)

F = 100 N

Therefore, the electric force acting on the raindrop is 100 N.

4 0

3 years ago

The momentum of light, as it is for particles, is exactly reversed when a photon is reflected straight back from a mirror, assum

LenKa [72]

Answer:

a) E = 2.00 10³ J , b) I = 6.66 10⁻⁶ N s , c) F = 1.66 10⁻⁶ N

Explanation:

a) The intensity is defined as the power per unit area

I = P / A

P = I A

Power is energy for time

P = E / t

We replace

E / t = I A

E = I A t

E = 1.0 10³ 2.0 1.00

E = 2.00 10³ J

b) The moment is

p = U / c

In the case of a reflection the speed is reversed, so the moment

Δp = 2 U / c

I = Δp

I = 2 U / c

I = 2.00 10³/3 10⁸

I = 6.66 10⁻⁶ N s

c) The defined impulse is

I = F t

F = I / t

For a time of 1 s

F = 6.66 10⁻⁶ / 1

F = 1.66 10⁻⁶ N

d) Suppose n small mass mirror m = 10 10⁻³ kg, we write Newton's second law

F = ma

a = F / m

a = 1.66 10⁻⁶ / 10 10⁻³

a = 1.66 10⁻⁴ m / s

We see that the acceleration is very small and attended to increase the mass of the mirror will be less and less, so the assumption of no twisting of the mirror is very reasonable

5 0

3 years ago

A man is flying in a hot-air balloon in a straight line at a constant rate of 5 feet per second, while keeping it at a constant

icang [17]

Answer:

$x = 220.85 ft$

Explanation:

Let at any moment of time the friend's car is at some horizontal distance "x" from the position of balloon.

Now if the altitude of the balloon is fixed and it is at height "h"

so here we will have

$tan \theta = \frac{h}{x}$

now we know that

initially the angle of the friend's car is 35 degree

so the horizontal distance will be

$x_1 = h cot35$

similarly if the angle after passing the car position is 36 degree

then we have

$x_2 = h cot36$

now the speed of the balloon is constant

so we have

$v = \frac{x_1 + x_2}{\Delta t}$

$5 ft/s = \frac{h cot35 + h cot36}{90 s}$

$5 ft/s = \frac{2.8h}{90}$

$h = 160.45 ft$

so the final position of friend when the angle is 36 degree

$x = \frac{h}{tan36}$

$x = \frac{160.45}{tan36}$

$x = 220.85 ft$

4 0

3 years ago

: Modeling Chemical Reactions

77julia77 [94]

Answer:

A Matter is not created or destroyed and the same amount of mass remains

Explanation:

In a chemical reaction, according to the law of conservation of matter, "matter is neither created nor destroyed and the same amount of mass remains in such a process".

New kinds of products are formed in a chemical reaction because they undergo chemical changes.
The chemical changes results in energy changes and formation of new kinds of substances.
Based on the law of conservation of matter, mass is constant.
Mass is not lost or gained.

8 0

3 years ago

Genetics is the most important factor that affects your physical fitness. a. True b. False