In the reaction 2Ca + O2 → 2CaO for every 2 Ca you will need how much O2?

a.

1

b.

2

c.

3

d.

4

Answer:

definitely top answer

Explanation:

because it make sense

Answer:

The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.

Explanation:

And tension

Answer:

B.

Explanation:

Given that a student runs up a flight of stairs which info is not needed to calculate the rate of the student is doing work against gravity A the height of the flight of stairs B the length of flight of stairs C the time taken to run up the stairs D the weight of the student

The rate of doing work is known as power.

Power = work done/time

Work done = energy = mgh

Since energy = mgh

Where mg = weight

And h = height

Time = time taken to run up the stairs.

Time, weight mg and height h will be needed while the Length of the flight is therefore not needed.

The correct answer is B.

Answer:

This is easy

Explanation:

Ok so you pick a element on the physics table and put the protons, electrons, and neutrons

Answer: Normal fault

Explanation:

The type of fault that is explained above is a normal fault. We should note that normal faults typically takes place in a divergent boundary in a scenario where the crusts may have been pulled apart.

Since the crust is pulled apart in this case, it leads to the downward movement of the hanging wall which leads to the football being above the hanging wall.

Answer:

Option A is correct statement...

The atoms and molecules of both the liquid water and the table are moving...

is correct...

Explanation:

no comments...

The true statement regarding the transverse waves should be option D. the direction at which the energy and the matter should be travel in the perpendicular direction.

It is the waves where the motion in which all the points should be on the wave oscillate along the paths at the right angles with respect to the wave of the direction. The example of this kind of waves should be electromagnetic, etc. In this, the directions where the energy and the travel of matter should be perpendicular to each other

Hence, the correct option is d.

Learn more about waves here: https://brainly.com/question/21890036

simple answer .... all of it

Answer:

v = 4.4 m / s

Explanation:

Unfortunately, the exercise scheme does not appear. Let's analyze the problem the marble leaves point A with an initial velocity, goes down and then rises to a given height where its velocity is zero, in the whole trajectory they tell us that the resistance is zero, so we can use the conservation relations of the enegy.

Starting point. Point A

          Em₀ = K + U = ½ m v2 + mg y_a

point B.

          Em_f = U = m g y

the energy is conserved

         Em₀ = Em_f

         ½ m v² + mg y_a = m g y

        ½ m v² = m g (y -y_a)

         v = [tex]\sqrt {2g ( y - y_a)}[/tex]

         In the exercise the diagram is not seen, but the height of point A must be known, suppose that y_a = 4 m

       v = [tex]\sqrt{ 2 \ 9.8 ( 5 -4)}[/tex]

       v = 4.4 m / s

Answer:

please find attached pdf

Explanation:

I dont see the question to this

Answer:

The correct answer would be B

Explanation:

I took the test and we use wind and turbines to create a renewable energy source.

Answer:

False.....................................

Answer:54cm²

Explanation:Area of first rectangle=L×B=6×5=30cm²

Area of second rectangle=L×B=8×3=24cm²

Areas are added to 54cm²

Answer:i think 10

Explanation:

Answer:

256.5 km

Explanation:

Answer:

256.5 km

Explanation:

There's you go, hope this helps.

Answer: drying towels at the beach.

Explanation:

Radiation simply has to do with the energy that is gotten from a particular source and then goes through some materials. It simply means the way energy is being transmitted as waves or heat through a certain medium.

From the options given, the scenario whereby a radiation takes place is when drying towels on the beach.

Answer:B-drying towels at the beach

Explanation:

Answer:

KE = [tex]\frac{1}{2}[/tex] m[tex]v^{2}[/tex]

Explanation:

In the generation of energy from hydroelectric power station, the motion of water, and the turbines are paramount. The falling flowing water turns the blades of the turbine, which in-turn causes the movement of a coil within a strong magnetic field.

The motion of the coil which cuts the strong magnetic field induces current. Thus, the system generates electrical energy.

The equation that links kinetic energy (KE), mass (m) and speed (v) can be expressed as:

KE = [tex]\frac{1}{2}[/tex] m[tex]v^{2}[/tex]

Answer:

for any object in motion , distance is always greater than displacement

For any object in motion, distance is always greater or equal to the displacement but it can never be less than the displacement because displacement is the shortest distance measured between the initial and the final position.

An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard.

Displacement describes this shift in location.

Distance is always higher or equal to displacement for any item in motion, but it can never be less because displacement is the shortest distance between the beginning and end positions.

Learn more about displacement here,

https://brainly.com/question/10919017

#SPJ2

Answer:

Capacitance = 0.00058 Farads

Explanation:

Given the following data;

Charge, Q = 7mC to Coulombs = 7/1000 = 0.007C

Velocity = 12V

To find the capacitance;

Capacitance = charge/potential difference

Substituting into the equation, we have;

Capacitance = 0.007/12

Capacitance = 0.00058 Farads

Answer:

Loam is 40% sand, 40% silt, and 20% clay

Explanation:

There is no cure for any of those. However you can contain the symptoms with medications

Answer:

All of them except diabetes

Explanation:

Answer:

Workdone = 1960 Joules.

Explanation:

Given the following data;

Mass = 5kg

Force = 49N

Height (distance) = 40m

To find the workdone;

Workdone = force * distance

Substituting into the equation, we have;

Workdone = 49*40

Workdone = 1960 Joules.

Therefore, the amount of work done on the bowling ball to lift it is 1960 Joules.

Answer:

d. 12.30 grams

Explanation:

Given the following data;

Force = 652 N

Acceleration = 53 m/s²

To find how much the object weigh, we would need to determine its mass;

Force = mass * acceleration

652 = mass * 53

Mass = 652/53

Mass = 12.30 grams.

Therefore, the object weighs 12.30 grams.

Answer:

We conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

Explanation:

Given

To determine

Mass m = ?

Important Tip:

Using the formula

[tex]F = ma[/tex]

where

now substituting F = 500, and a = 75 m/s² in the formula

[tex]F = ma[/tex]

[tex]500 = m(75)[/tex]

switch sides

[tex]m\left(75\right)=500[/tex]

Divide both sides by 75

[tex]\frac{m\cdot \:75}{75}=\frac{500}{75}[/tex]

simplify

[tex]m=\frac{20}{3}[/tex]

[tex]m=6.7[/tex] kg

Therefore, we conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

Answer:

Solar radiation is radiant energy emitted by the sun, particularly electromagnetic energy.

Answer:

the earth because us humans all live there and do many things like excercise jobs cleaning and other things