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
Leno4ka [110]
3 years ago
13

According to the Periodic Table of Elements, Calcium (Ca) has:

Physics
1 answer:
RSB [31]3 years ago
8 0

Answer:

A- 20 protons and 20 electrons

Explanation:

You might be interested in
Cassie pulled the boat onto the ice and adjusted its sails. Once she got started she would be able to steer, change direction an
gladu [14]

Wind Energy is the kind of energy will Cassie uses to power the boat.

What is wind energy?

The method of producing electricity using air or wind currents that naturally occur in the earth's atmosphere is known as wind energy (or wind power). Electricity is produced by modern wind turbines that harness the kinetic energy of the wind. Wind passing across the turbine's blades is the initial step.

What is the major problem with wind energy?

Wind energy has the potential to have negative environmental effects, including the possibility of reducing, fragmenting, or deteriorating habitat for wildlife, fish, and plants, as with all energy supply choices. Furthermore, flying animals like birds and bats may be harmed by turbine blades in operation.

Learn more about wind energy: brainly.com/question/27997211

#SPJ4

8 0
2 years ago
Explain the following observations:
Deffense [45]

Answer and Explanation:

a. An oxygen-filled balloon is not able to float in the air, because the oxygen inside the balloon is of the same density, that is, the same "weight" as the oxygen outside the balloon and present in the atmosphere. The balloon can only float if the gas inside it is less dense than atmospheric oxygen. Helium gas is less dense than atmospheric gas, so if a balloon is filled with helium gas, that balloon will be able to float because of the difference in density.

b. The ship is able to float in the water because its steel construction is hollow and full of air. This makes the average density of this ship less than the density of water, which makes the ship lighter than water and for this reason, this ship is able to float. In addition, the ship is partially immersed, allowing the weight of the ship on the water to counteract the buoyant force that the water promotes on the ship. Weight and buoyant are two opposing forces that keep the ship afloat.

6 0
3 years ago
In a certain region of space, a uniform electric field has a magnitude of 4.30 x 104 n/c and points in the positive x direction.
denis23 [38]
The magnetic force exerted by a field E to a charge q is given by F=Eq. In this case, F=4.30*10^4*(6.80mu C). 1mu C=10^-6C, so F=4.30*6.80=10^-2=0.29N. The direction is in the x direction, the direction that the field is applied because the charge is positive.
5 0
3 years ago
PLEASE HELP ASAP!!!
Hatshy [7]
The distance the spring stretches is the answer. 

I hope this helps. 

Have a nice day. 
5 0
3 years ago
How many paths through which charge can flow would be shown in the circuit diagram of a series circuit?
Natalka [10]

A) one ... same current passes through each cpt


7 0
3 years ago
Other questions:
  • What is the first step in glycolysis
    8·1 answer
  • With a frequency of 500 hz, what is the period of a wave
    9·1 answer
  • In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 36.0mi/gal , how many liters of gasoline would
    13·1 answer
  • How many electrons are in the outer energy level of an atom of carbon
    15·1 answer
  • A 40 kg shell is flying at a speed of 72 km/h. It explodes into two
    15·1 answer
  • What it the direction of the weight or force of gravity?
    12·1 answer
  • raju is standing at a distance of 1.5 m from a plane mirror find the distance between raju and his image between raju and his im
    14·1 answer
  • Why are there more fat, shaggy bison in Time 3 than in Time 1?
    9·1 answer
  • Tính chỉ số ampe kế thay ampe kế bằng vô kế có điện trở rất lớn thì vô kế chỉ bao nhiêu
    11·1 answer
  • If every one-point change in the federal funds rate alters aggregate demand by $200 billion, how far did AD shift in response to
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!