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Bess [88]
4 years ago
12

Which statement best describes an atom? (1 point) protons and neutrons grouped in a specific pattern protons and electrons sprea

d around randomly a group of protons and neutrons that are surrounded by electrons a ball of electrons and neutrons surrounded by protons
Physics
1 answer:
sashaice [31]4 years ago
7 0

A group of protons and neutrons surrounded by electrons

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Please help me because i’m trash at these and i need help with five more
Andrej [43]

Answer:

Explanation:2

4 0
3 years ago
Can some answer 7 a and b please
pav-90 [236]

Answer:

a.After 15 second Mr Comer's speed =  1.7 m/s

b.Distance travelled by Mr.Comer in 15 seconds  =   18.75\ m

Explanation:

a. Lets recall our first equation of motion V_{f} =V_{i} + at

Now we know that V_{i} = 0.8m/s , a = 0.06\ m/s^2 and

t = 15 \ sec

Plugging the values we have.

V_{f} =V_{i} + at

V_{f} =0.8 + 0.06 \times 15

V_{f} =0.8+ 0.9

V_{f} =1.7 m/s

Then Mr.Comer's speed after 15 sec = 1.7ms^-1

b.

Lets find the distance and recall our third equation of motion.

V_{f} ^2-V{i}^2 = 2as

So s = distance covered.

Dividing both sides with 2a we have.

\frac{V_{f} ^2-V{i}^2}{2a} = 2as

Plugging the values.

\frac{(1.7)^2-(0.8)^2}{2\times0.06} = 2as

s= 18.75\ m

So Mr.Comer will travel a distance of s= 18.75\ m.

4 0
4 years ago
A power source of 6.0 V is attached to the ends of a capacitor. The charge is 12 C.
ArbitrLikvidat [17]
The electric field at any point in the region between the conductors is proportional to the magnitude Q of charge on each conductor. It follows that:

"The potential difference Vab between the conductors is also proportional to Q"

If we double the magnitude of charge on each conductor, the charge density at each point doubles, the electric field at each point doubles, and the potential difference between conductors doubles; however, the ratio of charge to potential difference does not change. This ratio is called the capacitance C of the capacitor:

C= \frac{Q}{V_{ab}}

Given that:

V_{ab}=6V and Q=12\mu C 

Lastly, the capacitance is given by:

C= \frac{12\mu C}{6V}=2\mu F 
5 0
3 years ago
Read 2 more answers
What is the acceleration of a 10 kg mass pushed by a 5N force?
ehidna [41]

Answer:

0.5

Explanation:

F = ma

5 = 10 a

a = 5/10

a = 0.5

4 0
3 years ago
Even when shut down after a period of normal use, a large commercial nuclear reactor transfers thermal energy at the rate of 150
Phoenix [80]

Answer:

The temperature of the core raises by 2.8^{o}C every second.

Explanation:

Since the average specific heat of the reactor core is 0.3349 kJ/kgC

It means that we require 0.3349 kJ of heat to raise the temperature of 1 kg of core material by 1 degree Celsius

Thus reactor core whose mass is 1.60\times 10^{5}kg will require

0.3349\times 1.60\times 10^{5}kJ\\\\=0.53584\times 10^{5}kJ

energy to raise it's temperature by 1 degree Celsius in 1 second

Hence by the concept of proportionately we can infer 150 MW of power will increase the temperature by

\frac{150\times 10^{6}}{0.53584\times 10^{8}}=2.8^{o}C/s

5 0
3 years ago
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