A ball drops some distance through the air, gaining 20 j of kinetic energy while experiencing some air resistance. how much gravitational potential energy did the ball lose

Answer:

tension

Explanation:

correct on edge

Answer:

Explanation:

the hitting should be in the almost top so the more faster and strong u hit more the ball more at top will go and more far will go

Answer:

0.25 J

Explanation:

c. The rock would fall to the magma's base.

This is due to the fact that rock generally has a density higher than the magma from which it crystallized.

The rock would sink to the bottom because it would be denser than the surrounding magma, much like how a solid ice cube descends to the bottom of a glass of water.

Magma originates above the oceanic crust slab that is subducting, builds up at the bottom of the Earth's inflexible crust, and then gathers in a storage zone 13 km (8 mi) beneath the volcano before erupting.

Mantle rock melting causes magma to develop. The rocks begin to melt a little bit as they rise (or as water is added to them).

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Answer: To find the coefficient of static friction:

Frictional force needed to start the book sliding:

f_s = F_applied = 5.0 N

The maximum force of static friction can be found using:

f_s,max = μ_s N

where N is the normal force between the book and the table.

To find N, we need to consider the forces acting on the book:

The force of gravity acting downwards (weight)

The normal force from the table acting upwards

Since the book is not accelerating vertically, we can say:

N - mg = 0

N = mg

where m is the mass of the book, and g is the acceleration due to gravity.

So, N = (1.0 kg + 100 kg) x 9.81 m/s^2 = 1089.9 N

Now we can find μ_s:

f_s,max = μ_s N

5.0 N = μ_s x 1089.9 N

μ_s = 0.0046

Therefore, the coefficient of static friction between the book and the table is 0.0046.

To find the coefficient of kinetic friction:

Frictional force needed to keep the book sliding at a constant velocity:

f_k = F_applied = 4.0 N

The force of kinetic friction is given by:

f_k = μ_k N

where N is the normal force, which we already found to be 1089.9 N.

So, μ_k = f_k / N

μ_k = 4.0 N / 1089.9 N

μ_k = 0.0037

Therefore, the coefficient of kinetic friction between the book and the table is 0.0037.

To find the distance the book slides before coming to rest:

When the teacher stops pushing the book, the only force acting on it is the force of kinetic friction, which acts to slow down the book. The book will eventually come to rest when its velocity is zero.

We can use the equation of motion:

v^2 = u^2 + 2as

where u is the initial velocity, v is the final velocity (which is zero), a is the acceleration (which is the same as the deceleration due to friction), and s is the distance travelled.

Rearranging the equation, we get:

s = (v^2 - u^2) / 2a

Substituting the given values:

u = 0.30 m/s (since the book is moving at a constant velocity before the teacher stops pushing it)

v = 0 m/s (since the book comes to rest)

a = - μ_k g (since the force of friction acts in the opposite direction to the book's motion)

a = - 0.0037 x 9.81 m/s^2 = -0.0363 m/s^2

Plugging in the values, we get:

s = (0 - (0.30 m/s)^2) / (2 x (-0.0363 m/s^2))

s = 0.41 m

Therefore, the book slides 0.41 meters before coming to rest.

Explanation:

A car of mass 772 kg is traveling at 21.4 m/s when the driver applies the brakes, which lock the wheels. The car skids for 4.87 s in the positive x-direction before coming to rest.

The required calculations can be performed using the following equations:

1. F = ma2. v = u + at3. s = ut + (1/2) at^2

Here, u = 21.4 m/s (initial velocity)

a = (-μg) = (-0.5 x 9.8) = -4.9 m/s^2 (deceleration due to the lock)

μ = 0.5 (frictional coefficient between road and tires)

g = 9.8 m/s^2 (acceleration due to gravity)

The normal force is given as:

N = mgN = 772 x 9.8N = 7580.6 N

Now, the force due to friction can be calculated:

F = μN = 0.5 x 7580.6F = 3790.3 N

Therefore, acceleration can be calculated as follows:

F = ma=> a = F/m=> a = 3790.3/772a = 4.91 m/s^2

Now, the final velocity can be calculated as:

v = u + at=> v = 21.4 + (-4.91 x 4.87)v = -0.384 m/s

A negative sign indicates that the car is moving in the negative x-direction.

In order to calculate the distance traveled, we will use the formula:s = ut + (1/2) at^2=> s = 21.4 x 4.87 + (1/2) x (-4.91) x (4.87)^2s = 52.79 mT

herefore, the car skids for 52.79 m in the negative x-direction before coming to rest.

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The energy stored in a capacitor can be expressed in three ways: Ecap=QV2=CV22=Q22C E cap = QV 2 = CV 2 2 = Q 2 2 C , where Q is the charge, V is the voltage, and C is the capacitance of the capacitor. The energy is in joules when the charge is in coulombs, voltage is in volts, and capacitance is in farads.

Answer: Try A. 110 Hz

Explanation:

Answer:

i got 110 Hz..

Explanation:

Answer: The x-component of the total force 97N

Explanation:

Given the following :

Mass (M) of skier = 73.9 kg

Pull force on the skier = 105N

Angle of pull = 22.5°

The direct backward force directly pulling the skier = 74.8N

the x-component of the total force on the skier

The horizontal component of the force = Magnitude of the pulling force × cosine of the angle of pull (FCosΘ)

FCosΘ = 105cos22.5°

105cos22.5 = 105 × 0.9238795

= 97.007350

= 97N

The backward force acting directly backward = 74.8N

Therefore, net x - component of the total force equals ;

97N - 74.8N = 22.2N

The sum of kinetic energy and potential energy of an object can change without work having been done on the object.

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Answer:

C. The amount of matter it has

Answer:

Crop rotation is the practice of growing a series of different types of crops in the same area across a sequence of growing seasons. It reduces reliance on one set of nutrients, pest and weed pressure, and the probability of developing resistant pest and weeds

The work done by friction when a crate of 263 kg slides 3.2 m is 1072.2 J.

Friction is the force that opposes the motion of two bodies in contact.

To calculate the work done by friction, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the work done by friction is 1072.2 J.

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According to given information, The 0.3 second difference in fall times results in a 9.5% difference in the estimates of the building's height.

The students attempted to estimate the height of a building by dropping a barometer off the roof and timing its fall. One student recorded a fall time of 3.0 seconds, while the other student recorded a fall time of 3.3 seconds. We need to calculate the percentage difference in their estimates of the building's height based on this time difference.

To find the percentage difference, we can use the formula:

Percentage Difference = (Difference / Average) x 100

First, let's calculate the difference in fall times:

Difference = 3.3 s - 3.0 s = 0.3 s

Next, we need to find the average of the two fall times:

Average = (3.3 s + 3.0 s) / 2 = 3.15 s

Now, let's substitute the values into the formula:

Percentage Difference = (0.3 s / 3.15 s) x 100

Simplifying the calculation:

Percentage Difference = 0.0952 x 100

Percentage Difference = 9.5%

So, the 0.3 second difference in fall times results in a 9.5% difference in the estimates of the building's height.

In conclusion, the 0.3 second difference in fall times results in a 9.5% difference in the estimates of the building's height.

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Create the heaviest elements in the universe. Supernovas are incredibly powerful explosions that occur when massive stars reach the end of their lives and collapse.

During a supernova, the star's core undergoes a catastrophic collapse, triggering a series of nuclear reactions that create extremely high temperatures and pressures. These extreme conditions allow for the creation of the heaviest elements in the universe, such as gold, platinum, and uranium, which cannot be produced through fusion in the cores of stars. Fusion reactions in the cores of stars can only produce elements up to iron, which has the highest binding energy per nucleon. Supernovas are also responsible for dispersing these heavy elements throughout the universe, as the explosion ejects material from the star's core into space. This material can then become incorporated into new stars, planets, and other celestial bodies. In addition to creating heavy elements, supernovas also generate large amounts of heat and light. The intense radiation from a supernova can outshine entire galaxies and can be visible from millions of light-years away. However, the creation of heat and light is not something that supernovas can do that fusion in the cores of stars cannot do. It is the creation of heavy elements that sets supernovas apart from other stellar phenomena.

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The energy stored in the capacitor is calculated as 630150 J. The ratio between the energy density per unit mass of the 9.0 kg capacitor system and the 130,000 J/kg of the truck's battery is 70.17

The formula to calculate the energy stored in a capacitor is expressed by the formula: 

E = (1/2)CV²

where E is energy, C is capacitance, and V is voltage.

The question mentions that the capacitor is fully charged to 13.8 V. Therefore, the energy stored in the capacitor is given by the formula:

\(E = (1/2)CV^2 \\= (1/2)\times (500 F)\times {(13.8 V)}^2\\= 630150 J\)

The ratio between the energy density per unit mass of the 9.0 kg capacitor system and the 130,000 J/kg of the truck's battery can be computed by dividing the energy density of the capacitor system by the energy density of the truck's battery.

We know that energy density = energy / mass of the system.

Thus, the formula to calculate the ratio is:

\(Ratio = \dfrac{energy density per unit mass of capacitor system}{ energy density per unit mass of truck's battery}\\Ratio= \dfrac{630150 J / 9 kg}{ 130,000 J / 1 kg}= 70.017\)

Therefore, the ratio of energy density per unit mass of the capacitor system to that of the truck's battery is 70.017.

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Answer:

The first option, energy is transferred.

Explanation:

Answer:

There must be an equal amount of each element on both sides of the equation. Hope this helps and please marks as the brainliest.

Explanation:

Answer:

The answer is D

Explanation:

Hope this helps!

Answer:

wattage and time used

Explanation:

Look

If a electrical appliance has more power or wattage it will use more energy and cost more

If a electrical appliance is used for more time the cost is more

Hence Option C is correct

The formula of a spring-mass-damper system is given by md2x/dt2 + cdx/dt + kx = F(t).

The spring-mass-damper system is a common model used in physics and engineering to describe the behavior of various mechanical systems, such as a car suspension system or a building during an earthquake. The equation of motion for a spring-mass-damper system is typically given by:

md2x/dt2 + cdx/dt + kx = F(t)

where m is the mass of the object attached to the spring and damper, x is the displacement of the mass from its equilibrium position, t is time, c is the damping coefficient, k is the spring constant, and F(t) is an external force applied to the system at time t.

The term md2x/dt2 represents the acceleration of the mass, while cdx/dt represents the damping force (i.e. resistance to motion) caused by the damper, and kx represents the force exerted by the spring. The external force F(t) can be any force applied to the system, such as an oscillating force or a constant force.

The solution to this differential equation depends on the initial conditions (i.e. the initial position and velocity of the mass) and the specific values of the parameters m, c, and k. The behavior of the system can be analyzed using various techniques, such as finding the natural frequency of the system or using numerical simulations to model the motion over time.

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ANSWER:

46.08 kg

STEP-BY-STEP EXPLANATION:

Given

m1 = 1152 kg

v1 = 0.06 m/s

v2 = -1.5 m/s

We apply law of conservation of linear momentum:

We plug in and calculate for the mass, just like this:

Which means that the mass of the pianist is 46.08 kg

Explanation:

centripetal force is a force that makes a body follow a curved path. for example, twirling,a lasso, cream seperator etc.

A force that causes an objectmoving in a circular path to move out and away from the centres of it's path is centrifugal force. for example,drifting, banked roads, washing machine etc.

Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. for example, stirring batter, stone tied to a string etc

hope its helpfull♡

Answer:

p2=28.12KPa

Explanation:

Given data:

Initial temperature = 295 K

Final temperature= 395 K

Initial pressure = 21.0 KPa

Final pressure = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

21.0 KPa / 295 K = P₂/395 K

P₂ = 21.0 KPa× 395 K / 295 K

P₂ = 8295 KPa. K /295 K

P₂ = 28.12 KPa

Answer:

A. 4.67 m/s²

Explanation:

u = 145 m/s

v = 75 m/s

t = 15 s

a = v - u / t

= 145 - 75 / 15

= 4.67 m/s²

Hope this helped...

With the use of Ohm's law formula and some assumption, the answers are

(a) V2 = 30v

(b) I2 = 5 A

(c) R1 = 1 Ω

(d) R2 = 6 Ω

(e) RT = 4 Ω

Current can simply be defined as the rate at which charges flow in a conducting material. It is measured in Ampere.

From the given circuit,

a) V2 and V3 are in parallel, so they will have the same voltage. The voltage dropped in V1 should be taken away from the total voltage. That is,

V2 = VT - V1

V2 = 40 - 10

V2 = 30v

b) The current produced from the battery is assumed to split equally on R2 and R3. Therefore, I2 = 5 A

c) The total current will flow through I1. That is,

I1 = 10 A

Using Ohm's law V1 = I1 × R1

10 = 10 × R1

R1 = 10/10

R1 = 1 Ω

d) From Ohm's law, V2 = I2 × R2

30 = 5R2

R2 = 30/5

R2 = 6 Ω

e) By using Ohm's law again

VT = IT × RT

40 = 10 × RT

RT = 40/10

RT = 4Ω

Therefore, The resistance in R1, R2 and R3 are 1Ω, 6Ω and 6Ω

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Answer:

A simple cell can be made by connecting two different metals in contact with an electrolyte

Answer:

Explanation:

\(a = \frac{v_f-v_0}{t}\) which is the final velocity minus the initial velocity in the numerator, and the change in time in the denominator.  For us:

\(a=\frac{2.7-1.6}{1.2}\) so

a = .92 m/s/s (NOT negative because you're speeding up)