If a girl running along a straight road with a uniform velocity 1.5m/s,find her acceleration

Hedea made a study chart about nuclear energy. Which best describes the error in Hedea’s chart? The nuclei of atoms are split ap

Lerok [7]

Option (d) is correct.Fission and fusion convert nuclear energy to both radiant and thermal energy.

fission is a process in which bigger nucleus breaks into two or more smaller nuclei with the liberation of a large amount of energy.

Fusion is a process in which two small nuclei fuse together to from an intermediate size nucleus with the liberation of tremendous amount of energy

During fission and fusion, energy is released in the form of both light (radiation) and heat.we can then convert that energy into useful form.

5 0

3 years ago

Read 2 more answers

When you drop a 0.43 kg apple, Earth ex erts a force on it that accelerates it at 9.8m / (s ^ 2) toward the earth's surface. Acc

Sever21 [200]

Answer:

The answer to the question is highlighted in the box

8 0

1 year ago

A student releases a ball from rest on an inclined plane and measures that it travels a distance of 0.6 m in a time of 4.0 s. Fi

Korvikt [17]

The average speed of the ball is 0.15 m/s.

The average speed of the ball can be calculated using the formula below.

<h3 /><h3> Average speed: </h3>

This is the ratio of the total distance to the total time traveled by a body

<h3 /><h3>Formula:</h3>

S = d/t.................. Equation 1

<h3>Where:</h3>

S = Average speed
d = total distance
t = total time.

From the question,

<h3>Given:</h3>

d = 0.6 m
t = 4.0 s

Substitute these values into equation 1

S = 0.6/4
S = 0.15 m/s

Hence, the average speed of the ball is 0.15 m/s.

Learn more about average speed here: brainly.com/question/4931057

8 0

2 years ago

Glycerin is poured into an open U-shaped tube until the height in both sides is 20 cm. Ethyl alcohol is then poured into one arm

cestrela7 [59]

Answer:

0.043 m

Explanation:

From the attachment, the shaded part is the ethyl alcohol. The crossed part on the other hand, is that of glycerin.

The height of the Ethyl Alcohol is h2 = 0.25 m, it's density is ρ2 = 790 kg/m³. The density of glycerin is ρ1 = 1260 kg/m³

If we assume pressure at the two points to be the same, then

P1 = P2

ρ1.g.V1 = ρ2.g.V2

ρ1.A.h1 = ρ2.A.h2

ρ1.h1 = ρ2.h2, making h1 subject of formula

h1 = ρ2.h2 / ρ1, so that

h1 = 790 * 0.25 / 1260

h1 = 197.5 / 1260

h1 = 0.157 m

Δh = 0.2 - 0.157

Δh = 0.043 m or 4.3 cm

8 0

3 years ago

Two 1.0 cm * 2.0 cm rectangular electrodes are 1.0 mm apart. What charge must be placed on each electrode to create a uniform el

kvv77 [185]

Answer:

The number of electrons that must be moved from one electrode to the other to accomplish this is 1.4 X 10⁹ electrons.

Explanation:

<u>Step 1:</u> calculate the charge on each electrode

Given;

Electric field strength = 2.0 X 10⁶ N/C

The distance between the electrode = 1mm = 1 X 10⁻³ m

Electric field strength (E) = Force (F)/Charge (q)

$E =\frac{Kq}{r^2}$

where;

E is the electric field strength = 2.0 X 10⁶ N/C

K is coulomb's constant = 8.99 X 10⁹ Nm²/C²

r is the distance between the electrodes = 1 X 10⁻³ m

q is the charge in each electrode = ?

$q = \frac{Er^2}{K} = \frac{(2X10^6)(1X10^{-3})^2}{8.99 X10 ^9}$ = 0.2225 X 10⁻⁹ C

The charge on each electrode is 0.2225 X 10⁻⁹ C

<u>Step 2:</u> calculate the number of electrons to be moved from one electrode to the other.

1 electron contains 1.602 X 10⁻¹⁹ C

So, 0.2225 X 10⁻⁹ C will contain how many electrons ?

= (0.2225 X 10⁻⁹)/(1.602 X 10⁻¹⁹)

= 1.4 X 10⁹ electrons

Therefore, the number of electrons that must be moved from one electrode to the other to accomplish this is 1.4 X 10⁹ electrons.

8 0

3 years ago