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2 years ago

Which statement best describes the relationship between atoms and nuclear forces? (2 points)

Physics

1 answer:

Setler79 [48]2 years ago

4 0

Answer:

D. Strong nuclear forces hold the nucleus of an atom together. Weak nuclear forces are involved when certain types of atoms break down.

Explanation:

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Which Sl units are combined to describe energy?

azamat

Answer:

kilograms and m²/s²

Explanation:

The SI units combined to describe energy is kilograms and m²/s² ;

Energy can be derived from;

Potential energy = mgh

Units = kg x m/s² x m

= kg m²/s²

Even if we use kinetic energy, we still get kg m²/s²

5 0

3 years ago

The damage caused by electric shock depends on the current flowing through the body; 1 mA can be felt and 5 mA is painful. Above

Angelina_Jolie [31]

Answer: $V_{min} = 110 V$

Explanation:

Voltage is calculated by Ohm's Law:

$V_{min} = i_{min} \cdot R_{dry}\\V_{min} = (0.001 A)\cdot(1.1 \times 10^5 \Omega)\\V_{min} = 110 V$

3 0

3 years ago

The electric potential at a position located a distance of 20.7 mm from a positive point charge of 8.60×10-9C and 15.1 mm from a

max2010maxim [7]

Answer:

q2 = -4.35*10^-9C

Explanation:

In order to find the values of the second charge, you use the following formula:

$V=k\frac{q_1}{r_1}+k\frac{q_2}{r_2}$ (1)

V: electric potential = 1.14 kV = 1.14*10^3 kV

k: Coulomb's constant = 8.98*10^9 Nm^2/C^2

q1: charge 1 = 8.60*10^-9 C

q2: charge 2 = ?

r1: distance to the first charge = 20.7mm = 20.7*10^-3 m

r2: distance to the second charge = 15.1mm

You solve the equation (1) for q2, and replace the values of the other parameters:

$q_2=\frac{r_2}{k}[V-k\frac{q_1}{r_1}]=\frac{Vr_2}{k}-\frac{q_1r_2}{r_1}\\\\q_2=\frac{(1.14*10^3V)(15.1*10^{-3}m)}{8.98*10^9Nm^2/C^2}-\frac{(8.60*10^{-9}C)(15.1*10^{-3}m)}{20.7*10^{-3}m}\\\\q_2=-4.35*10^{-9}C$

The values of the second charge is -4.35*10^-9C

8 0

3 years ago

a set of water travels at 10 m/s, and 5.0 waves pass you in 2.0s. what is the wavelength of the waves?

Alecsey [184]

Well, I think the answer would be 4 meters because the speed is in meters per second and the frequency is 5 waves every 2 seconds.
Wavelength = Speed/Frequency
I think the frequency is 2.5 waves a second but that's not something I'm 100% sure about.
I hope this helps though.

3 0

4 years ago

Lightning and thunder take place in the sky at the same time and at the same distance from us. Lightning is seen earlier and thu

Tasya [4]

Answer:

Lightning is seen earlier than the thunder because speed of light is more than the speed of sound. Therefore, even though both occurs as same time and place in the sky, lightning is seen earlier.

3 0

3 years ago