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
pogonyaev
3 years ago
8

An element's atomic number is 71. How many protons would an atom of this element have?

Physics
1 answer:
vovikov84 [41]3 years ago
3 0

The atom has 71 protons.

(The atomic number of a chemical element is the number of protons found in the nucleus of an atom)

hope this helps

You might be interested in
Janelle is exploring the relationship between the brightness of a light bulb and the current that powers it. When applying these
Vlada [557]

Answer:B

Explanation:

Y is the brightest bulb

7 0
3 years ago
another way, speed is a scalar value, while reloolg isa Which ONE of the following represents a toy car that moves at a higher a
erica [24]

Car  A will have highest speed is 83.3m/s .

<h3>What is speed ? </h3>

The rate of change of position of an object in any direction.

The S.I unit is m/s . Speed is a scalar quantity it defines only magnitude not direction

.

speed = distance /time

In case of Car A ,

We have given distance 150Km in 3 min ,

First we have convert the distance km to m

150×1000m

then conversion of min to sec

 38×60sec

speed = 15000/180

speed = 83.3m/sec

In case of Car B

we have given 800m in 150 min

lets convert the time into second

150×60

Speed = 800/150×60

speed = 0.88m/ s

In case of Car C

We have given here distance 250 Km and time in 8 hours

convert km to m

25000

and time into sec

88×60×60

speed = 0.86m/ s



Hence ,Car A has highest speed amongst them .

To learn more about speed click here

brainly.com/question/7359669

#SPJ9

4 0
1 year ago
William WangHomework #33 Regents Review (3)0989Assignment Mode : Open (Time On Task) 9 of 25 ListenDuring a collision, an 84-kil
Lemur [1.5K]

Answer:

1.7\cdot 10^3 N

Explanation:

The impulse theorem states that the product between the force and the time interval of the collision is equal to the change in momentum:

F \Delta t = m \Delta v

where

F is the force

\Delta t is the time interval

m is the mass

\Delta v is the change in velocity

Here we have

m = 84 kg

\Delta t = 1.2 s

\Delta v = 24 m/s

So we can solve the equation to find the force:

F= \frac{m \Delta v}{\Delta t }=\frac{(84 kg)(24 m/s)}{1.2 s}=1680 N \sim 1.7\cdot 10^3 N

4 0
3 years ago
During the flight of the ball, what is the direction of its Acceleration due to gravity
vekshin1
Regardless of what direction an object is moving, the acceleration
due to gravity is always directed toward the center of the Earth. 
That's the direction commonly known as "down".
4 0
3 years ago
As you slide a heavy box across the floor, friction applies a force of -100 N
nirvana33 [79]

Answer:

A -500J

Explanation:

because W=Fs

100 × 5 = 500

4 0
3 years ago
Read 2 more answers
Other questions:
  • You performed an experiment in which you measured the amount of water leaking through different types of roofs. For one roof, yo
    13·2 answers
  • The average kinetic energy of water molecules is greatest in
    9·1 answer
  • What is a prediction
    12·2 answers
  • Separating the electron from the proton in a hydrogen atom takes 2.18 ✕ 10−18 j of work. through what electric potential differe
    11·1 answer
  • Water cools from2oC to -2oC. During this time, what happens to the motion of the molecules? A) The motion of the molecules stops
    5·1 answer
  • A sample of a substance has a high density, yet a low particle motion. This sample must be a
    6·2 answers
  • Please help me .finish this paper​
    8·1 answer
  • A guitar string transmits waves at
    15·1 answer
  • You are tasked with calibrating the springs for a pinball machine. Your method of testing the springs is by attaching masses ont
    14·1 answer
  • VELOCITY, SPEED, DISTANCE ETC..
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!