Calculate the TOTAL mechanical energy of pendulum is it swings from his highest point to its lowest point. Pendulum mass is 4 kg. Use your equations for gravitational potential energy and kinetic energy to determine these values based on the data given below. Total energy is the sum of gravitational potential energy and kinetic energy. In this problem, round gravity to: g = 10 m/s^2.

Answer:

It is B

Explanation:

Because the high temp and perisher is inner and the densest is the same thing

Answer: They both described the inner part

Explanation:

True, energy can in move in waves because waves transfers energy during their propagations.

A wave is a disturbance that transfers energy from one point to another, along its path of propagation.

A wave can be mechanical or electromagnetic.

A mechanical type of wave requires material medium for its propagation.

Examples;

An electromagnetic wave does not require material medium for its propagation.

Examples;

Thus, we can conclude that energy can in move in waves because waves transfers energy during their propagations.

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Answer:

one of a set of unrelated units of measurement, which are arbitrarily defined and from which other units are derived. For example, in the SI system the fundamental units are the meter, kilogram, and second.

Explanation:

Answer:

convection

Explanation:

The only way convection can only take place in liquids and gas.Since the marshmello is neither,convection is the least effective way

Answer:

ntensive properties: A physical property that will be the same regardless of the amount of matter.

Explanation:

Answer:

[M1 L2 T-3 I-1]

Answer:

B. speed

Explanation:

im not sure hahahaha

Initial speed = 2√10 m/s

Linear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration  

An equation of uniformly accelerated motion  

V = vo + at  

Vt² = vo² + 2a (x-xo)  

x = distance on t  

vo / vi = initial speed  

vt / vf = speed on t / final speed  

a = acceleration  

vf=20 m/s

d = 60 m

a = 3 m/s²

[tex]\tt vf^2=vi^2+2.ad\\\\20^2=vi^2+2\times 3\times 60\\\\400=vi^2+360\\\\40=vi^2\\\\vi=\sqrt{40}=2\sqrt{10}~m/s[/tex]

Answer:

the moon has no atmosphere, and it cannot trap heat or insulate the surface.

Explanation:

the moon is too small. ... With weak gravity, gases that are emitted from the surface quickly are lost to outer space.

Answer:

This question lacks options, the options are:

A. the number of days the rainwater was allowed to sit

B. the number of times the rainwater was observed

C. the change in the amount of rainwater due to evaporation

D. the change in pH of the rainwater over time

The answer is A

Explanation:

In an experiment, the independent variable is the variable that is changed or manipulated by the experimenter in order to effect a measurable response.

In this experiment, Austin is trying to determine how time changes the pH of standing rainwater. He collects rainwater and distributes it evenly in 5 jars, which he measured the pH at different days using a pH testing kit. Hence, the independent or manipulated variable is THE NUMBER OF DAYS THE RAINWATER WAS ALLOWED TO SIT before measuring their pH.

The velocity of the gold puck after the collision be (2i - j) m/s.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

Given parameters:

Mass of the gold puck: m = 12 kg

Velocity of it before collision: u =  5i – 4j m/s.

Mass of the stationary blue puck: M = 18 kg.

Velocity of it after collision; V = 2i – 2j m/s.

We have to find:  the velocity of the gold puck after the collision: v = ?

From conservation of linear momentum, we get:

Total momentum of the system before collision =  Total momentum of the system after collision

⇒ mu + M.0 = mv + MV

⇒ v = u - MV/m

⇒ v  = (5i – 4j) m/s  - (2i – 2j)m/s×18/12.

⇒ v  = (5i – 4j) m/s - (3i - 3j) = (2i - j) m/s.

Hence velocity of the gold puck after the collision be (2i - j) m/s.

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Answer: I would say that B would have better weather because those dots on the right are cold fronts and the smooth side without the dots is a warm front. I hope this helps :)

Explanation:

Answer:

1) [tex]V_{1}[/tex]= 100ml = 0.1 L

2) [tex]P_{1}[/tex]= 50kPa

[tex]1) P_{2} =400 kPa\\2)V_{2} =?[/tex]

So,

    [tex]P_{1}V_{1} = P_{2} V_{2}[/tex]

     [tex]V_{2} = \frac{0.1 x 50}{400}[/tex]

     [tex]V_{2} = 0.0125 L[/tex]

[tex]2) V_{1} = 100 mL = 0.1 L\\P_{1}= 103 kPa\\V_{2}=2 mL\\P_{2} =?\\[/tex]

[tex]P_{1} V_{1} =P_{2} V_{2}\\ P_{2}=\frac{0.1x103}{2}\\ P_{2}=5.15 kPa[/tex]

[tex]4) V_{1}=2 cm^{3} = 0.002 dm^3\\P_{1} =3 atm x 760 = 2280 torr\\P_{2} = 0.0200 atm x 760=15.2 torr[/tex]

Same, formula as above,

                                   [tex]V_{2}=\frac{2280x0.002}{15.2}\\V_{2}=0.3 L[/tex]

[tex]7)V_{1}=325\\T_{1}=20^{0}C=293K\\ P_{1}=723 torr\\V_{2}=975L\\T_{2} = 20^0 C= 293K\\P_{2}=?[/tex]

By the formula,

                         [tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}} \\P_{2} = \frac{723x325x293}{293x975}[/tex]

                         [tex]P_{2} =241 Torr[/tex]

Answer:

C. Its melting point equals −38.8 °C because it is mercury.

Explanation:

Given that the old thermometer contained a very small amount of mercury and the melting point of mercury is [tex]-30^{\circ}C[/tex].

The temperature at which any material starts changing from the solid-state to the liquid-state is known as the melting point of the material.

As the melting point of any material does not depends on the amount of material. So, whether there is a small amount of mercury or is a large amount of mercury.

Hence, the melting point remains [tex]-30^{\circ}C[/tex] because it is mercury.

So, option (C) is correct.

As per the definition above, there is no need to burn the mercury to determine the melting point, so option (A) is wrong.

The melting point does not depend on the initial temperature, mass, volume of the material, so options (B) and (D) are wrong.

Answer:

During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction. At night, the ground cools and the heat flows from the warmer air directly above to the cooler ground via conduction.

Explanation:

Luck For You!

The process, in which conduction, convection, and radiation drive the water cycle in Earth’s system, is discussed in the answer.

The energy from the sun is what largely drives the water cycle. By evaporating water from the oceans, lakes, rivers, and even the soil, this solar energy powers the cycle. Through the process of transpiration, more water is transferred from plants to the atmosphere. Water droplets gradually acquire enough mass to fall back to Earth as precipitation as liquid water evaporates or transpires, forming clouds and water vapour.

The precipitation eventually transforms into runoff or groundwater and makes its way back into the surface reservoirs across a variety of periods. The hydrosphere currently contains the same amount of water as it has always contained in the Earth system since the water cycle is essentially a closed system.

Solar heat energy comes on earth's surface via radiation to the ponds, lakes, oceans, seas, rivers and other water resources and then the waterbodies get heated via conduction and evaporation happens. During evaporation time temperature water vapor goes to high altitude via convection of heat and cloud forms.

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Answer:

stupid question

Explanation:

Answer:

Problem 1-

The acceleration = 5 m/s²

Problem 2 -

The acceleration = 3.[tex]\overline 3[/tex] m/s²

Problem 3 -

The acceleration = 2.5 m/s²

Problem 4-

The force applied = 7.5 N

Problem 5-

The mass of the object,  = 0.5 kg.

Explanation:

Problem 1-

The mass of the ball, m = 0.5 kg

The force (applied) with which it was hit, F = 2.5 N

The acceleration, a = Force/Mass = 2.5 N/(0.5 kg) = 5 m/s²

The acceleration = 5 m/s²

Problem 2 -

The mass of the box, m = 15 kg

The force (applied) with which it was hit, F = 50 N

The acceleration, a = Force/Mass = 50 N/(15 kg) = 10/3 = 3.[tex]\overline 3[/tex] m/s²

The acceleration = 3.[tex]\overline 3[/tex] m/s²

Problem 3 -

The mass of the object, m = 2.0 kg

The force (applied) with which it was hit, F = 5.0 N

The acceleration, a = Force/Mass = 5.0 N/(2.0 kg) = 2.5 m/s²

The acceleration = 2.5 m/s²

Problem 4-

The mass of the object, m = 3.0 kg

The acceleration, a, of the object = 2.5 m/s²

The force applied to it, F = Mass × Acceleration = 3.0 kg × 2.5 m/s² = 7.5 N

The force applied = 7.5 N

Problem 5-

The acceleration, a, of the object = 12 m/s²

The force applied, F = 6.0 N

The mass of the object, m = Force/Acceleration = 6.0 N/(12 m/s²) = 0.5 kg

The mass of the object,  = 0.5 kg.

Answer: decrease.

Explanation:

If Earth's mass was cut in half, what would happen to your mass? it would decrease because gravitational force decreases.

Answer:

30kg

Explanation:

Distance between Alok and father = 5m

Father's distance from fulcrum  = 2m

Solak's weight  = 20kg

Unknown:

Weight of the father = ?

Solution:

This problem entail the balancing of forces around a fulcrum.

    In this problem;

        workdone by father   =  workdone by Alok

            ( mass x distance) father  = (mass x distance) Alok

   distance of Alok from the fulcrum  = 3m

 Input the parameters and solve;

           mass of father x 2  = 20 x 3

            mass of father  = 30kg

The weight of the father is 30kg

Answer:

The second fish, X2, is moving faster than the first fish, X1

Explanation:

The given parameters for the equation of motion of the fishes are;

X1 = -6.4 m + (-1.2 m/s)×t

X2 = 1.3 m + (-2.7 m/s)×t

The given equation are straight line equations in the slope and intercept form, where the slope is the speed and in m/s and the intercept is the starting point of swimming of the fishes

For the first fish, the intercept = -6.4 m, the slope = the  speed = -1.2 m/s

For the second fish, the intercept = 1.3 m, the slope = the  speed = -2.7 m/s

Whereby the fishes are swimming in the opposite direction of the measurement of length, we have;

The magnitude of the speed of the second fish [tex]\left | -2.7 \ m/s \right | = 2.7 \ m/s[/tex], is larger than the magnitude of the speed of the first fish [tex]\left | -1.2 \ m/s \right | = 1.2 \ m/s[/tex]

Therefore, the second fish, X2, is moving faster than the first fish, X1.

A. Potential energy C. Kinetic energy

I just took the quiz

Answer:

Potential energy + Kinetic energy

Explanation:

ap3x verified

Answer:

4.6s

Explanation:

v=u+at

0=22.5+(-9.8)t

-22.5=-9.8t

t=-22.5/-9.8

t=2.295 s

The total time will double

2.295×2=4.59s

=4.6s

Answer:

Benzene

Explanation:

A denser substance will have a higher or larger mass in the same volume. Therfore benzene will be a denser liquid as the mass is bigger in the same volume compared to ethonal.

You can also work this out by using the density formula which is mass of the substance over the unit of volume.  

Answer:

The total mechanical energy

Explanation:

M = Mass

V = Velocity

G = Gravity

H = Height

KE = 1/2mv²

PE = mgh

ME = KE + PE

ME = 1/2 mv² + mgh

thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy

The eight types of energy are Kinetic Energy, Potential Energy, Thermal Energy, Chemical Energy, Electrical Energy, Radiant Energy, Nuclear Energy, and Sound Energy.

The eight types of energy are:

Kinetic Energy: The energy possessed by an object due to its motion.

Potential Energy: The energy stored in an object based on its position or condition.

Thermal Energy: The energy associated with the motion of particles in a substance. It is related to temperature.

Chemical Energy: The energy stored in the bonds of chemical compounds.

Electrical Energy: The energy associated with the movement of electric charges.

Radiant Energy: The energy carried by electromagnetic waves, such as light or radio waves.

Nuclear Energy: The energy released or absorbed during nuclear reactions or radioactive decay.

Sound Energy: The energy produced by the vibration of objects and transmitted through a medium as sound waves.

These are the commonly recognized types of energy. It's important to note that energy can often be converted from one form to another.

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Answer:

A

Explanation:

big brain

During this quick stop, some of the mechanical energy (his motion) was changed into heat energy.

Energy is the ability to do work. There are different types of energy such as Heat energy, light energy, kinetic energy, and gravitational energy.

Heat is the energy that moves from one body to another when temperatures are different. Heat passes from the hotter to the colder body when two bodies with differing temperatures are brought together.

The joule is a unit of energy that serves as the SI unit for heat (J). The calorie (cal), which is defined as "the amount of heat necessary to raise the temperature of one gram of water from 14.5 degrees Celsius to 15.5 degrees Celsius," is another common unit of heat measurement.

Therefore, During this quick stop, some of the mechanical energy (his motion) was changed into heat energy.

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Answer:

C)Gravitational force would decrease by a factor of 2.

Explanation:

Hope this helps :)