2. Which of the following is not used to calculate kinetic energy?
mass
c. height
b. weight
d. speed
a.

Answer:

1911 J

Explanation:

P.E = mgh

P.E= (65)(9.8)(3)

Answer:

Lens

Explanation:

A lens galaxy has a large flattened core.

Spiral has arms.

Elliptical is a perfect sphere.

Answer:lens

Explanation:

Answer:

the answer is 0.5m/s in meters per second

Answer: 197

Explanation:

Because mechanical energy and mass it speeds up

Answer:

motion

Explanation:

when an object moves, it gains kinetic energy. so correct option in motion.

hope it helps!

Answer:

mental health is thoughts and emotional health is feelings they are both connected by the brain, like trauma it is emotional and mental

Answer:

Explanation:

Difference #1: Processing Information Versus Expressing Emotion

Part of mental health is how well your mind processes and understands information and experiences. In contrast, emotional health involves your ability to manage and express the emotions that arise from what you have learned and experienced.

Difference #2: One Can Thrive While the Other Struggles

An important distinction between mental and emotional health is that you can experience mental health issues while maintaining good emotional health, and vice versa. For example, while struggling with a

mental health problem like having little energy for daily tasks, you can still exhibit emotional health by finding effective ways to manage that lack of energy.

Difference #3: The Scope of the Two Terms

Mental health is not only about how well you understand and process what you experience. It also includes your ability to carefully reason through decisions and maintain a steady, focused attention span. The wide scope of mental health puts it in sharp contrast to emotional health, which has the more focused definition of actively understanding and managing your emotions.

similarities

Mental health gives some damage to the brain and so does emotional

They both lead you to depression

Answer:

A = 10.83 in² ,  w = 3.29 in

Explanation:

For this exercise we must use the rotational equilibrium condition

        Σ τ = 0

in this case they give us the external torque τ = 3800 lb in.

        τ - τ’= 0

        τ = τ'

where τ‘ is the torque exerted by the brake shoe that is given by the friction force

      τ’ = fr r sin θ

indicates that θ= 120º and the radius is half the diameter of the drum

      r = 6 in

the friction force is given by the expression

       fr = μ N

substitute

        τ = μ N r sin θ         (1)

to find the normal let's use Newton's second law on the perpendicular pressure axis

        Σ F = 0

        N - f = 0

        N = f

The applied force can be found using the definition of pressure

         P = f / A

where A is the area of ​​the footing

         f = P A

let's substitute

          N = P A

let's substitute in 1

         τ = μ P A r sin θ

         [tex]A= \frac{\tau }{\mu \ P \ r \ sin\ \theta }[/tex]

let's calculate

          A = 3800 / (0.45 150 6 sin 120)

          A = 10.83 in²

to find the size of the shoe we must assume a specific shape, suppose the shoe is square

          A =w²

          w = √A

          w = 3.29 in

the spine is divided into four main regions: cervical, thoracic, lumbar and sacral.

Have an amazing day! <3

Answer:

True

Explanation:

An electric field is a region around a charged particle or object within which a force would be exerted on other charged particles or objects.

Hello :D

For this applicate the formula:

[tex]\boxed{d=vt}[/tex]

Data:

d = Distance = ?

v = Velocity = 4 m/s

t = Time = 2160 s

Replace according formula:

d = 4 m/s * 2160 s

d = 8640 m

Result:

The distance is of 8640 meters.

The bird cover the distance of "8640 meters".

According to the given question,

Velocity, v = 4 m/s

Time, t = 2160 s

We know the formula,

→ Distance = Velocity × Time

or,

→ d = vt

By substituting the values, we get

       = [tex]4\times 2160[/tex]

       = [tex]8640 \ m[/tex]

Thus the above answer is correct.  

Find out more information about the distance here:

https://brainly.com/question/4931057

Answer:

kg

Explanation:

Answer:

b. She is moving north, and her speed is increasing.

Answer:

She is moving North, and her speed is increasing.

Explanation:

She is moving north, which is positive, and her speed is increasing, which is also positive, which the question said that her velocity and acceleration are both positive values, and this answer has both positive values.

Answer:

True. The object's location is based off of the reference point, so by moving the reference point, you move the object's location.

Explanation:

Answer:

True

Explanation:

the reference point is where the object starts so changing where it starts changes the objects location.

Answer:

At point A;

GPE = 58800 J

KE = 0 J

At point B;

GPE = 44100 J

KE = 14700 J

At point C;

GPE = 0 J

KE = 58800 J

At point D;

GPE = 29400 J

KE = 29400 J

EPE = 29400 J.

Explanation:

The Gravitational Potential Energy, GPE, is given as follows;

GPE = The mass. m × The acceleration due to gravity, g × The elevation or height, h

∴ GPE = m × g × h

The Kinetic Energy, KE = 1/2  × The mass × The square of the velocity, v²

KE = 1/2 × m × v²

At point A;

The parameters are;

h = 100m, v = 0 (Starting point), Cart mass, m = 60 kg, we have;

GPE = m × g × h = 60 × 9.8 × 100 = 58800

GPE = 58800 J

KE = 1/2 × m × v² = 1/2 × 60 × 0² = 0

KE = 0 J

Mechanical Energy, ME = GPE + KE = 58800 + 0 = 58800 = Constant

ME = 58800 J

At point B;

GPE = 60 × 9.8 × 75 = 44100

GPE = 44100 J

KE = ME - GPE = 58800 - 44100 = 14700

KE = 14700 J

At point C;

GPE = 60 × 9.8 × 0 = 0 J

KE = ME - GPE = 58800 - 0 = 58800

KE = 58800 J

At point D;

v = 0, the Cart is brought to rest by the spring

GPE = 60 × 9.8 × 50 = 29400

GPE = 29400 J

KE = ME - GPE = 58800 - 29400 = 29400

KE = 29400 J

The Elastic Potential Energy EPE gained by the spring = KE = 29400

EPE = 29400 J.

Answer:

75 N

Explanation:

f = uN

f = 1(75)

f = 75

Answer:

1.3.

Explanation:

From the question given above, the following data were obtained:

Sine of incident angle (Sine i) = 0.217

Sine of refracted angle (Sine r) = 0.173

Refractive index (n) =?

From snell's law, the Refractive index is simply defined as the ratio of the sine of the incident angle to sine of the refracted angle. Mathematically, it is expressed as:

Refractive index = Sine of incident angle / sine of refracted angle

n = Sine i / Sine r

With the above formula, we can obtain index of refraction as shown below:

Sine of incident angle (Sine i) = 0.217

Sine of refracted angle (Sine r) = 0.173

Refractive index (n) =?

n = Sine i / Sine r

n = 0.217 / 0.173

n = 1.3

Thus, the index of refraction is 1.3.

Answer:

n = 1.25

Explanation:

Height of Aeroplane = 500 meters

Speed of Aeroplane = 200 m/s

Acceleration due to gravity = g = 10m/s^2

time of package to reach the ground = t = ?

Horizontal distance = d = ?

When the bomb is dropped, it will have an initial horizontal velocity which is equal to the speed of the plane as the plane is just moving in horizontal direction. So the bomb fall and will travel forward.

Initial horizontal velocity is given by,

                                            [tex]V_{ix} = 200 ms{-1}[/tex]

Initial vertical velocity is given by,

                                            [tex]V_{iy} = 0m/s[/tex]

By the second equation of motion under gravity,

                                           [tex]H = V_{iy}t + \frac{1}{2}gt^2\\\\500 = (0)t + \frac{1}{2}x10xt^2 \\\\500 = 0 + 5t^2\\\\t^2 = \frac{500}{5}\\\\t^2 = 100\\\\t = 10 seconds[/tex]

For horizontal distance(d):

Horizontal distance has no acceleration thus d is given by

                                          d = vt

                                          d = 200x10

                                          d = 2000 meters

Answer:

Distance, r = 700.31 m

Explanation:

Mass of two objects, [tex]m_1=m_2=5\times 10^{15}\ kg[/tex]

Force between the objects , [tex]F=3.4\times 10^{15}\ N[/tex]

We need to find the distance between the two objects. The force of gravitational between two objects is given by :

[tex]F=G\dfrac{m_1m_2}{r^2}\\\\r=\sqrt{\dfrac{Gm_1m_2}{F}} \\\\r=\sqrt{\dfrac{6.67\times 10^{-11}\times (5\times 10^{15})^2}{3.4\times 10^{15}}}\\\\=700.31\ m[/tex]

So, the distance between the objects is 700.31 m.

Answer:

c

Explanation:

Answer:

Inclined Plane - A ramp, for example a wheelchair ramp to help move to another level.

Wheel & Axle - On lawnmowers and wheelbarrow.

Lever - A seesaw

Pulley - adjustable clothesline (think from back then when you would put clothes out to dry them)

Screw - the bottle caps you screw on or off

Answer:A complex system is a system composed of many components which may interact with each other.

Explanation: hope this helped!

Answer:

the body has energy due to its constant motion. it means it moves in a uniform acceleration which has zero velocity

Explanation:

Uniform or constant acceleration is a type of motion in which the velocity of an object changes by an equal amount in every equal time period.

Answer:

Half as much as it was

Explanation:

According to Charles law

PV = k

P is the pressure

V is the volume

If PV= k, then P1V1= P2V2

P1 and P2 are the initial and final pressure respectively

V1 and V2 are the initial and final volume respectively

Given

V1 =11.2litres

P1 = 0.860atm

If the volume is doubled, V2 = 2(11.2) = 22.4litres

Get P2

P2 = P1V1/V2

P2 = 0.860×11.2/22.4

P2 = 0.860/2

P2 = P1/2 (since P1 =0.860)

P2 = 1/2 P1

Hence the pressure becomes halved if the volume is doubled

Answer:

an inclined plane Makes easier to raise something heavy,like a rock. instead of lifting the rock straight up,you can raise it from its original Location with less force by pushing it up a ramp

Answer:

The proton-proton fusion process that is the source of energy from the Sun. The energy from the Sun - both heat and light energy - originates from a nuclear fusion process that is occurring inside the core of the Sun. The specific type of fusion that occurs inside of the Sun is known as proton-proton fusion.

Explanation:

Have a great day everyone :)

Answer:

This is what happens to the hydrogen gas in the core of the Sun. It gets squeezed together so tightly that four hydrogen nuclei combine to form one helium atom.

^This is called nuclear fusion. while this is happening some of the mass of the hydrogen atoms are made into energy in the form of light.

Explanation:

Answer:

v₃ = 1.59 [m/s]

Explanation:

In order to solve this problem, we must use the principle of conservation of linear momentum.

That is, the momentum is conserved before and after the jump.

Before the jump, we have the mass of the woman and the canoe without speed (at rest). After the jump you have the woman moving to the right and the canoe moving to the left.

[tex](m_{1}+m_{2})*v_{1}=(m_{1}*v_{2})-(m_{2}*v_{3})[/tex]

where:

m₁ = mass of the woman = 44 [kg]

m₂ = mass of the canoe = 69 [kg]

v₁ = velocity of the canoe at rest = 0

v₂ = velocity of the woman after jumping = 2.5 [m/s]

v₃ = velocity of the canoe after jumping = [m/s]

[tex](44+69)*0= (44*2.5)-(69*v_{3})\\110 = 69*v_{3}\\v_{3}=1.59[m/s][/tex]