H+ H+He
A. alpha decay
B. beta decay
C. nuclear fusion
D. nuclear fission
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Answer:

Tension = 2.5 N

Explanation:

Given:

Angle = 60°

Force f = 5 N

Find:

Tension

Computation:

Tension = fcosθ

Tension = (5)cos60

Tension = (5)(1/2)

Tension = 2.5 N

Answer:

professional communication style is expected to be formal while the casual is informal.

Explanation:

Answer:

29.4m/s

Explanation:

Given parameters:

Time  = 3s

Unknown:

Average velocity  = ?

Solution:

To solve this problem, we use the expression below:

      v  = u + gt

v is the average velocity

u is the initial velocity  = 0m/s

g is the acceleration due to gravity  = 9.8m/s²

t is the time

So;

        v  = 0 + (9.8 x 3)  = 29.4m/s

Answer:

The answer should be C

Explanation:

Answer:

bowling

Explanation:

bowling is an example of work because it involves hand movement.

Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2

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Answer:

true

Explanation:

Answer:

True

Explanation:

Answer:

Explanation:

a. From the information provided in the question, the blue liquid is a solution. This is because a solution is a type of homogeneous mixture (that has an evenly distributed solute in a solvent) which is the reason the liquid was said to be blue (and not immiscible blue solid in a liquid) but after been exposed to heat became just a blue solid. Typically, a solution has a solute and a solvent (combined), the solute here is the blue solid while the solvent is the liquid that made the combination a liquid.

b. Since the dish containing the liquid was placed on a windowsill, it can be assumed that the dish was subjected to heat from the sun which caused the liquid (in the solution) to evaporate after exposure to the heat from the sun (over the weekend) leaving the blue solid solute (of the solution) to remain in the dish. This can be referred to as evaporation to dryness in separation techniques (if the goal was to intentionally separate the solid solute from the liquid solvent).

Answer:

The answer is 494.9 N

Explanation:

I got this same question, and it worked for me! Hope this helps <3

Answer: You didnt finish the question. But as magma cools it turns to igneous rock.

Answer: 0.83333333333 km/h

Explanation: give brainliest

true because

brick: solid

milk: liquid

ice cube: solid

Answer:

The relative velocity of the motorcycle to a passenger in the car is 30 km/h

Explanation:

The question relates to the principle of relative velocity and reference frames

The given parameters are;

The velocity of the motorcycle, v₁ = 120 km/h

The velocity of the car, v₂ = 90 km/h

The relative velocity of an object X with regards to another object Y is the velocity the object X will seem to be moving with to an observer in the rest frame of object Y written as [tex]\underset{v}{\rightarrow}_{X|Y}[/tex] = [tex]\underset{v}{\rightarrow}_{X}[/tex] - [tex]\underset{v}{\rightarrow}_{Y}[/tex]

Therefore, the relative velocity of the motorcycle to the car is [tex]v_{1|2}[/tex] = v₁ -  v₂, which give;

[tex]v_{1|2}[/tex]  = 120 km/h - 90 km/h = 30 km/h

The relative velocity of the motorcycle to a passenger in the car = 30 km/h.

Answer:

Explanation:

Hope this helps!

Answer:

a. constructive interference

Explanation:

100% correct

Answer:

plane

Explanation:

Answer:

By placing it in water and measuring how high the water rises

Explanation:

You can place the object in a can filled with water. You'll then see that as it sits there, the water level rises. You would then measure that to find the volume.

Answer:

1. Schedule your activities

2. Prioritize the more important tasks

3. Avoid procrastination

Explanation:

Time-management techniques are strategies or methods developed by people to help them effectively manage their time. My best friend in the scenario above cannot effectively manage his time because he has a lot of activities crowding up his time.

To get better in his grades, he should strike a balance between school work and extracurricular activities. He should make a workable schedule where only the most important tasks are prioritized. He should also learn to execute these tasks on time without postponing them.

Answer:

Sample Response: He should decide on a study time that works best for him, create a study schedule, and manage his study sessions by using a daily to-do list

Explanation:

got it right on edge 2021

Answer:The voltage V in volts (V) is equal to the current I in amps (A) times the resistance R in ohms (Ω): V (V) = I (A) × R (Ω) The power P in watts (W) is equal to the voltage V in volts (V) times the current I in amps (A): P (W) = V (V) × I (A) AC Ohm's law calculator.

Explanation:

40 ampere current passes through a 1 kW heater with 25 Voltage across it.

The difference in electric potential between two places is known as voltage, often referred to as electric pressure, electric tension, or potential difference. It relates to the amount of labor required to transfer a test charge between two places in a static electric field.

Given that power of the source is 1 kW and voltage is 25 V

current is given as,

Power = Voltage*Current

1kW = 25*Current

Current = 1000/25 = 40 ampere.

40 ampere current passes through a 1 kW heater with 25 Voltage across it.

To learn more about voltage refer to the link:

brainly.com/question/13521443

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Answer:

have two or more paths

Explanation:

A parallel circuit is one that has two or more paths for the electricity to flow, the loads are parallel to each other.

Answer:

27.1m/s

Explanation:

Given parameters:

Height of the building  = 30m

Initial velocity  = 12m/s

Unknown:

Final velocity  = ?

Solution:

We apply one of the kinematics equation to solve this problem:

         v²  = u²  + 2gh

v is the final velocity

u is the initial velocity

g is the acceleration due to gravity

h is the height

          v²   = 12²  + (2 x 9.8 x 30)

          v  = 27.1m/s

Answer:

1a)40-27=13

1b) heat

1c)efficiency = W out/W in

so 27/40= 67%

Explanation:

[tex]{\bold{\sf{\underline{Understanding \: the \: concept}}}}[/tex]

✠ This question says that there is an object and its mass is 2 kg ; it's raised to a height 10 m and possess potential energy of 200 J. Now this question ask us to find the kinetic energy and the potential energy at a height 4 metre.

[tex]\bold{↬{ }}[/tex][tex]{\bold{\sf{\underline{Given \: that}}}}[/tex]

✰ Mass = 2 kilograms

✰ Raised height = 10 metres

✰ Posses potential energy = 200 Joules

[tex]\bold{↬{ }}[/tex][tex]{\bold{\sf{\underline{To \: find}}}}[/tex]

✰ Kinetic energy at a height 4 metre

✰ Potential energy at a height 4 metre

[tex]{\bold{\sf{\underline{Solution}}}}[/tex]

✰ Kinetic energy at a height 4 metre = 120 J

✰ Potential energy at a height 4 metre = 80 J

[tex]{\bold{\sf{\underline{Using \: concepts}}}}[/tex]

✰ Potential energy formula.

[tex]{\bold{\sf{\underline{Using \: formula}}}}[/tex]

✰ Potential energy = mgh

[tex]{\bold{\sf{\underline{We \: also \: write \: these \: as}}}}[/tex]

✰ Potential energy as P.E

✰ Mass as m

✰ Joules as J

✰ Height as h

✰ Raised height as g

[tex]{\bold{\sf{\underline{Full \: solution}}}}[/tex]

↦ Potential energy = mgh

↦ Potential energy = 2 × 10 × 4

↦ Potential energy = 20 × 4

↦ Potential energy = 80 J

↦ Kinetic energy = Posses potential energy - Finded potential energy

↦ Kinetic energy = 200 J - 80 J

↦ Kinetic energy = 120 Joules

An object of mass 2kg raised to a height 10m possess potential energy of 200J.

What is the kinetic energy and potential energy at a height 4 metre?

from energy conservation,

potential energy at 10m height =potential energy +kinetic energy at 4 m

potential energy at 10 m height=200

let,Kinetic energy at 4m=KE

potential energy at 4m=PE

so,

potential energy at 4m height =

Hence,

kinetic energy at 4m is =200-80=120J

Answer:

..

Charcoal is flammable.

Answer:

I believe it is A.c

Explanation:

hope its right

Answer:

the correct answer is A with a line on top

Explanation:

I just did the quiz

Answer:

198.20 N

Explanation:

Given that,

Mass of a heavy bag, m = 25 kg

The bag is attached to the ceiling until it makes an angle of 36 degrees to the vertical.

We need to find the force must the boxer exert on the bag. The force acting on the bag is given by :

[tex]F=mg\cos\theta\\\\=25\times 9.8\times \cos(36)\\\\=198.20\ N[/tex]

So, the required force is 198.20 N.

The person with the greatest density will hit the earth first.

This is regarded as the mass per unit volume of a substance.

Density = mass/ volume

In objects with different densities, the drag and buoyancy forces will be the

same. They will however have different gravitational force in which the

denser object has more compared to lighter ones.

Read more about Density here https://brainly.com/question/1354972

Answer:

Option B 400meters

Explanation:

What is displacement

Displacement is a vector whose length is the shortest distance from the initial to the final position of a point P undergoing

Given data

number of laps = 2

length of lap= 400meters

Since after every one lap she returns to her initial position ]

the displacement is 400meters