1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ohaa [14]
2 years ago
5

What does it mean to say that the protons give the atom is identity

Physics
1 answer:
Salsk061 [2.6K]2 years ago
7 0

The number of protons tells you what element an atom is. Just knowing the number of neutrons/mass number does not tell you what element an atom is, since atoms of the same element can have different mass numbers. But all atoms with the same number of protons, are also always of the same element.

Hence, we can identify an atom by the number of protons it has

You might be interested in
a train travels 99 kilometers in 3 hours, and then 80 kilometers in 5 hours. What is it’s average speed?
Karolina [17]

Average speed = (total distance covered) / (time to cover the distance)

Total distance covered = (99km + 80km) = 179 km

Time to cover the distance = 8 hours

Average speed = (179km / 8hours)

Average speed = 22.375 km/hour

6 0
3 years ago
You did 200 joules of work lifting a 150-newton backpack. How high did you lift the backpack?
kaheart [24]
We know that:
W=Fs
200J=150N*s
s=200J/150N
s=1,33m
8 0
3 years ago
____is the distance traveled during a specific unit of time
qaws [65]
I think speed is the answer
6 0
3 years ago
A horizontal force of 300.0 N is used to push a 145-kg mass 30.0 m horizontally in 3.00 s. Calculate the power developed.
Svetradugi [14.3K]

Answer:

3 * 10³J/s

Explanation:

Given :

Force applied, F = 300 N

Distance, d = 30 m

Time, t = 3 seconds

Power, P = Workdone / time

Recall :

Workdone = Force * distance

Workdone = 300 N * 30 m = 9000 Nm

Workdone = 9 * 10³ J

Power = (9 * 10³ J) / 3s

Power = 3 * 10³J/s

4 0
3 years ago
A european car manufacturer reports that the fuel efficiency of the new microcar is 28.5 km/l highway and 22.0 km/l city. what a
Studentka2010 [4]

We know that:

1 mile = 1.61 km

1 gal = 3.8 L

 

Therefore converting the fuel efficiency rates:

highway = (28.5 km/L) * (1 mile / 1.61 km) * (3.8 L / 1 gal) = 67.27 mile / gal

<span>city = (22.0 km/L) * (1 mile / 1.61 km) * (3.8 L / 1 gal) = 51.93 mile / gal</span>

4 0
2 years ago
Other questions:
  • A person on a diet loses 1.6 kg in a week. How many micrograms/second (µg/s) are lost?
    12·1 answer
  • a paraellel plate capacitor consists of 2 large circular sheets of metal separated by 1.53 cm. The electric field energy density
    9·1 answer
  • You have created a circuit in science class. You are using a 9 volt battery. You have generated what type of current?
    14·2 answers
  • A 3-kilogram ball is accelerated from rest to a speed of 10 m/sec. What is the ball's change in momentum?
    15·2 answers
  • An Olympic athlete runs a 400 m race in 50 s. What is her average speed?
    10·1 answer
  • Why sunlight is not reflected when passed through an electric or magnetic field
    7·2 answers
  • The back shelf of a car has a physics textbook on it. The coefficient of static friction of 0.44 between the book and the surfac
    11·1 answer
  • 2) How many significant figures are in the number 0.0037010?<br>​
    8·1 answer
  • What is the mass of a baseball that has a kinetic energy of 105 J and is traveling at 10 m/s?​
    6·1 answer
  • As additional resistors are connected in parallel to a constant voltage source, how is the power supplied by the source affected
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!