Francesca and Maricruz are walking to Kroger to buy some juice. They walk 3000 meters in 900 seconds. What was their average speed in km/h?

Hi there!

We know that:

Ei = Ef

At the bottom of the incline, we have both rotational and translational kinetic energy. Recall:

Translational KE  = 1/2mv²

Rotational KE = 1/2Iw²

We can begin by deriving an equation for the final energy of the sphere.

Moment of Inertia of a hollow sphere= 2/3mR²

[tex]KE_{total} = \frac{1}{2}mv^2 + \frac{1}{2}(\frac{2}{3}mR^2(\frac{v^2}{R^2}))[/tex]

Simplify:

[tex]KE_{total} = \frac{1}{2}mv^2 + \frac{1}{3}mv^2 = \frac{5}{6}mv^2[/tex]

Since Ei = Ef, and the initial energy is simply PE = mgh, thus:

mgh = 5/6mv²

Cancel out 'm':

gh = 5/6v²

We are given the angular velocity, so we can convert to velocity using:

v = ωr

v = 5.88(.68) ≈ 4.00 m/s

h = (5/6v²)/g

h = (5/6(4²))/g = 1.359 m

Answer:

Electrical>thermal>light

Explanation:

Answer:

smog. Just trust me im sure its right.

The objects acceleration is 6m/s.

The time required for the ball to roll down the given distance is 4 seconds.

Given the data in the question;

Since the ball started from rest,

To determine the time required for the ball to travel the given distance, we use the Second Equation of Motion:

[tex]s = ut + \frac{1}{2}at^2[/tex]

Where s is distance traveled, u is initial velocity, a is acceleration and t is time taken.

We substitute our given values into the equation and solve for "t"

[tex]40m = [ 0*t ] + [ \frac{1}{2}\ *\ 5.0m/s^2\ *\ t^2 ]\\\\40m = 2.5m/s^2\ *\ t^2\\\\t^2 = \frac{40m}{2.5m/s^2}\\\\t^2 = 16s^2\\\\t = \sqrt{16s^2}\\\\t = 4s[/tex]

Therefore, the time required for the ball to roll down the given distance is 4 seconds.

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Answer:

Carnivores

Explanation:

A carnivore is an organism that mostly eats meat, or the flesh of animals. Sometimes carnivores are called predators. Organisms that carnivores hunt are called prey.

Carnivores are a major part of the food web, a description of which organisms eat which other organisms in the wild. Organisms in the food web are grouped into trophic, or nutritional, levels. There are three trophic levels. Autotrophs, organisms that produce their own food, are the first trophic level. These include plants and algae. Herbivores, organisms that eat plants and other autotrophs, are the second trophic level. Carnivores are the third trophic level. Omnivores, creatures that consume a wide variety of organisms from plants to animals to fungi, are also the third trophic level.

The sun's thermal energy serves as the primary energy source for producing atp during the photosynthesis process. Essentially, it serves as the primary catalyst for all metabolic processes in plants. Protons diffusing through the F0 section of ATP synthase

All living things contain the energy-carrying molecule adenosine triphosphate (ATP) in their cells. When food molecules are broken down, chemical energy is released that is captured by ATP and used to power other cellular operations.

To drive metabolic events that would not happen naturally, to transfer necessary molecules across membranes, and to do mechanical labor, such as moving muscles, cells need chemical energy.

Chemical energy cannot be stored by ATP; lipids and carbohydrates such as glycogen serve this purpose. ATP is created when energy from storage molecules is required by the cell.

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Answer:K;O9KGVB  

Explanation:

Answer:

[tex].[/tex]

» 30 N

Explanation:

Given :

Mass → m → 6kg

Acceleration → a →

[tex]5 {ms}^{ - 2} [/tex]

To find :

The formula for force

F = m • a

F = 6 • 5

F = 30 N

Answer:

D!!! im sure of it!

Explanation:

its correct in plato

Answer:

It will take the car 2 seconds to crash.

Explanation:

If the car is going down a 50 m cliff and the driver is going at 25 m/s it will take the car 2 seconds to crash.

25(m) x 2(seconds) = 50(m)

Answer:

Explanation:

Answer:

Yes

Explanation:

An object moving in a circle at constant speed is INDEED accelerating. It's accelerating because the direction of the velocity vector is changing.

Answer:

D) v= 6.4 m/s a=10m/s^2

Explanation:

At top vnet= ucos (theta)

= 10 cos (50)

=10× 0.64=6.4m/s

Acc will be g (10m/s^2)

•At top point vy=0 and vx=ucos (theta)

Horizontal vel always remain same.

Answer:

tan

Explanation:

Answer:

while moving up from the perigee, the swing converts kinetic energy to potential energy, and when coming back down it is transferred back to kinetic energy.

also friction converts energy to heat

Explanation:

yes

Answer:

current

Explanation:

Answer:

Yes

Explanation:

Especially the Seismic waves which travel faster than the others.

As the spring returns to it's equilibrium position, it performs

1/2 (4975 N/m) (0.097 m)² ≈ 23 J

while the gravitational force (opposing the block's upward motion) performs

-(0.244 kg) g (0.097 m) ≈ -2.3 J

of work on the block. By the work energy theorem, the total work done on the block is equal to the change in its kinetic energy:

23 J - 2.3 J = 1/2 (0.244 kg) v² - 0

where v is the speed of the block at the moment it returns to the equilibrium position. Solve for v :

v² = (23 J - 2.3 J) / (1/2 (0.244 kg))

v = √((23 J - 2.3 J) / (1/2 (0.244 kg)))

v ≈ 44 m/s

After leaving the spring, block is in free fall, and at its maximum height h it has zero vertical velocity.

0² - (44 m/s)² = 2 (-g) h

Solve for h :

h = (44 m/s)² / (2g)

h ≈ 2.3 m

Answer:

the missile approaches the second ship at 0.750c. Describe how the ships are moving with respect to one another.

Explanation:

Explanation:

P. E = mgh

P. E = 4x10x4 = 160Joules

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

f is the force

m is the mass

From the question we have

[tex]a = \frac{10}{2} = 5 \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

facts provided or learned about something or someone.

Answer:

The correct choice is D. Concentric exercise can be hard on joints, so she should be very careful.

The best advice for Elsa is she is probably using the stair machine wrong if the soreness resides for a long time. Therefore, option (B) is correct.

Exercise can be described as the body activity that enhances or maintains physical fitness, wellness, and overall health.

Exercise can be performed for various reasons, to aid growth, develop muscles, improve strength, and the cardiovascular system, honing athletic skills, weight loss or maintenance, and simply for enjoyment.

Many people choose to exercise outdoors where they socialize and improve their well-being as well as their mental health.

The amount of recommended exercise depends upon the type of exercise, goal, and age of the person in terms of health benefits, Even doing a small exercise can be healthier than doing nothing.

Any exercise causes soreness, but if soreness resides for a long time, it can be time to analyze your exercise and modifies it in an appropriate way.

Therefore, if the soreness resides for a long time, then Elsa is probably using the stair machine wrong.

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Answer:

the pressure of fruit juice is smaller

the pressure of water is bigger

Explanation:

Answer:

Your balloon has been expanding for 5 hours.

Explanation:

Your balloon has been expanding for 5 hours.