hammer falls off a roof top and strikes the ground with a certain kinetic energy. If it fell
from a roof twice as tall, how would its kinetic energy compare?

Answer:

In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei. ... Fission is a form of nuclear transmutation because the resulting fragments are not the same element as the original atom.

Explanation:

Plz mark brainliest thanks

Mercury experiences greatest change between its actual day temperature and actual night temperature of any planet in our solar system. The correct answer is A .

During day,  temperature on Mercury's surface can reach up to 430 degrees Celsius, due to its close proximity to sun and lack of a thick atmosphere to regulate temperatures. At night, however, surface temperature can plummet to -180 degrees Celsius, as planet's thin atmosphere is unable to retain heat. This temperature variation of over 600 degrees Celsius is largest of any planet in our solar system and is due to Mercury's slow rotation, which causes each day to last longer than two of its years, resulting in extreme temperature fluctuations. Correct answer is option: A.

To know more about Mercury experiences, here

brainly.com/question/11047112

#SPJ4

To find the resultant of two forces, we can use vector addition. The magnitude and direction of the resultant depend on the given conditions. Let's calculate the resultants for each case:

When the two forces are parallel and act in the same direction: In this case, we can simply add the magnitudes of the forces. Resultant = 7 N + 10 N = 17 N. The resultant force is 17 N in the same direction as the two forces. When the two forces are inclined at an angle of 60° to each other: To find the resultant, we need to use vector addition. We can use the parallelogram method or the triangle method. Let's use the triangle method. Draw a triangle with sides representing the magnitudes of the forces. The angle between the two forces is given as 60°. Using the law of cosines, we can find the magnitude of the resultant: Resultant^2 = (7 N)^2 + (10 N)^2 - 2 * (7 N) * (10 N) * cos(60°) Resultant = sqrt(49 N^2 + 100 N^2 - 140 N^2 * cos(60°)) Resultant ≈ 15.3 N The resultant force is approximately 15.3 N. When the two forces are inclined at an angle of 160°: Similar to the previous case, we can use the triangle method. Resultant^2 = (7 N)^2 + (10 N)^2 - 2 * (7 N) * (10 N) * cos(160°) Resultant = sqrt(49 N^2 + 100 N^2 + 140 N^2 * cos(160°)) Resultant ≈ 3.5 N The resultant force is approximately 3.5 N. When the two forces act at 90° to each other: In this case, we can use the Pythagorean theorem to find the magnitude of the resultant. Resultant = sqrt((7 N)^2 + (10 N)^2) Resultant ≈ 12.2 N. The resultant force is approximately 12.2 N.

To learn more about forces, https://brainly.com/question/13191643

#SPJ11

Answer:

100 ml de una disolucion 05 M de sulfate de vivre

Answer:

a

Explanation:

Answer:

A

Explanation:

The harmonic frequencies would be 880 Hz, 1320 Hz, 1760 Hz, and 2200 Hz if the fundamental frequency was 440 Hz.

The sound waves have a wavelength of 2m and travel at a speed of 440 m/s. Hence, the sound wave has a 2 m wavelength.

340 m/s x 340 Hz x 1 m = 340 m/s, the formula for wavelength. A 34,000 hertz wave has a wavelength of 340 m/s, and its frequency is 0.01 m, or 1 cm.

To know more about harmonic frequencies visit:-

brainly.com/question/12320829

#SPJ1

So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

Hi ! In this ocassion, I will help you to solve the question about impulses. Impulse also relate to momentum, where the amount of impulse will cause the difference (indicated in units of direction) velocity when an object move. Impulses that have opposite direction to the original direction will have a negative value.

Impulse is the result of a change in momentum, so it can be expressed in this formula :

\(\sf{I = \Delta p}\)

\(\boxed{\sf{\bold{I = m (v' - v_0)}}}\)

With the following condition:

\(\sf{I = m (v' - v_0)}\)

\(\sf{I = 0.15 (-30 - 50)}\)

\(\sf{I = 0.15 (-80)}\)

\(\boxed{\sf{I = -12 \: N.s}}\)

So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

a. u is harmonic for let u(x, y) = xy because ∂²u/∂x² + ∂²u/∂y² = 0.

b. A harmonic conjugate of u is v = (x² - y²)/2.

To determine that u is harmonic, we need to verify whether u satisfies Laplace's equation or not. Laplace's equation is given by:

∂²u/∂x² + ∂²u/∂y² = 0

On differentiating u(x, y) = xy partially, we get,

∂u/∂x = y∂u/∂y = x

On differentiating partially again, we get,

∂²u/∂x² = 0∂²u/∂y² = 0

Therefore, ∂²u/∂x² + ∂²u/∂y² = 0

Thus, u is harmonic.

To find a harmonic conjugate of u, we need to find v(x, y) such that u + iv is analytic. In other words, v must satisfy the Cauchy-Riemann equations. The Cauchy-Riemann equations are given by:

∂u/∂x = ∂v/∂y∂u/∂y = -∂v/∂x

On substituting u = xy in the above equations, we get,

∂v/∂y = x∂v/∂x = -y

On integrating the above equations, we get

v = (x² - y²)/2 + C

Thus, a harmonic conjugate of u is v = (x² - y²)/2.

Learn more about harmonic conjugate: https://brainly.com/question/32598939

#SPJ11

Explanation:

a variable In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation.

a unit In math, the word unit can be defined as the rightmost position in a number or the one's place

Answer:

B. 8 years

Explanation:

D = 1 a.u. - Distance from the Sun to the Earth in astronomical units (a.u.)

D₁ = 4 a.u - Distance from the Sun to the planet

T = 1 year - The period of the earth's revolution around the Sun

__________

T₁ - ? - The period of revolution of the planet around the Sun

Kepler's law

(T₁/T)² = (D₁/D)³

(T₁ / 1)² = (4 / 1)³

T₁² = 64

T₁ = √ 64 = 8 years

B. 8 years

The relationship between the planet's period and the Earth's period and cube root of the ratio between the planet's distance from the Sun and the Earth's distance from the Sun.

Kepler's third law is the theory applied to this puzzle.

Write the expression for the period of the planet first using Kepler's rule to take into account the period of the Earth, the distance from the Sun to the Earth, and the distance from the Sun to the planet.

To compute the period of the planet, finally, substitute the appropriate quantities. The relationship between the period and the separation between the Sun and the planet is provided by, in accordance with Kepler's third law: T² ∝ a³

T is the period in this case, and an is the separation between the planet and the Sun.

To know more about Kepler's third law, click on the link below:

https://brainly.com/question/6867220

#SPJ4

Answer:

70.3 kg

Explanation:

The MASS will be the same on the moon as on earth....but the eight is different

gravity of moon =   gravity of earth/6 = 9.81 / 6    m/s^2

F = ma

F/a = m  = 115 N / ( 9.81/6  m/s^2) = 70.3 kg mass

Answer:

Explanation:

Given:

g = 9.8 m/s²

g₁ = g / 6 = 9.8 / 6 ≈ 1.6 m/s²

F = 115 N

____________

m - ?

m  = F / g₁

m = 115 / 1,6 ≈ 71.9  kg

From low to high frequency, a wave's wavelength increases while its frequency decreases: 0.8 km, 5 m, 7 cm, 3 m, 460 nm, and 0.02 nm. The characteristic of a wave is known as its wavelength.

A wave's wavelength is the characteristic that determines how far identical locations between two succeeding waves are separated. The Greek letter lambda () is used to represent it. Thus, the wavelength is defined as the separation between one wave's crest or trough and the following wave.

The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency.

Learn more about  wavelength here

https://brainly.com/question/13533093

#SPJ4

Explanation:

Taking g=10m/s²

P.E =mgh

981J= 2×10×m

981J=20m

m. = 981J/20

m. = 49.05kg

The magnitude of the rocket's acceleration is 12.5 m/s².To find the magnitude of the rocket's acceleration, we can use the equation of motion: \(v^2 = u^2 + 2as\)

The above equation has  v is the final velocity, u is the initial velocity, a is the acceleration, and s is the distance traveled. Rearranging the equation, we have \(a = (v^2 - u^2) / (2s)\).Given that the initial velocity (u) is 20.0 m/s, the final velocity (v) is 30.0 m/s, and the distance traveled (s) is 40.0 m, we can substitute these values into the equation:

a = (30.0² - 20.0²) / (2 * 40.0)

= (900 - 400) / 80

= 500 / 80

= 6.25 m/s².

Therefore, the magnitude of the rocket's acceleration is 6.25 m/s².

Learn more about equation of motion here:

https://brainly.com/question/29278163

#SPJ11

Answer:

A South pole repels a nort pole is not true

Explanation:

South pole attract north pole

Answer:

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.

Explanation:

work done is equals to force into displacement in the direction of force

Ans: D

When the first hockey puck comes to rest after the collision then the conservation of momentum holds and the total final momentum of the system is 23.18 m/s.

Applying the law of conservation of momentum,

we get,

m1v1i + m2v2i= m1v1f + m2v2f

0.17 (15) + 0.11 (0) = 0.17 (0) + (0-11) (V₂f)

0.17 x1500+ 0.11 V2f Vaf 0.17x15 0.11

V₁f =23.18 m/s

A collision between bodies in which the total kinetic energy of the bodies is conserved. Elastic collisions, such as the collision of a rubber ball on a hard surface, result in the reflection or "bouncing" of bodies away from each other.

In a perfectly elastic collision, no energy is turned into thermal energy internal to the bodies, and none is spent on permanently deforming the bodies or radiated away in some other fashion.

A collision between bodies in which the total kinetic energy of the bodies is not conserved. Inelastic collisions, such as the collision of two balls of clay, tend to result in the slowing and sometimes the sticking together of the colliding bodies.

To know more about conservation of momentum here,

https://brainly.com/question/17140635

#SPJ4

The system's total final momentum is 2.54 kg m/s m/s when the first hockey puck comes to rest following the collision, proving that momentum conservation persists.

Utilizing the principle of momentum conservation,

we get,

\(M_{1} V_{1}i +M_{2} V_{2}i =M_{_{1} } V_{1}f +M_{2} V_{2} f\)

0.17 (15) + 0.11 (0) = 0.17 (0) + (0.11) (V₂f)

\(V_{2}\)f =23.18 m/s

p = mv

p = 0.11*23.18 kg m/s

p = 2.54 kg m/s

a collision in which both bodies maintain their full internal kinetic energy. Elastic collisions cause bodies to reflect or "bounce" away from one another, like when a rubber ball strikes a hard surface.

When two perfectly elastic bodies collide, no energy is converted into internal heat energy and no energy is used to permanently distort the bodies.

Learn more about elastic collisions visit:

brainly.com/question/12941951

#SPJ4

Answer:

(1) Every object moves in a straight line unless acted upon by a force. There is no change in the state of motion unless there is an unbalanced force acting on it

(2) The acceleration of an object is directly proportional to the net force exerted and inversely proportional to the object's mass.

F=m*a

(3) Every action has an equal and opposite reaction.

The velocity of the launched marble is 7.98 m/s. Using the formula by equation kinetic energy and potential energy.

Potential energy is a form of stored energy that is dependent on the relationship between different system components. When a spring is compressed or stretched, its potential energy increases. If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy. It is capable of performing more work when raised.

The directional speed of an item in motion, as measured by a specific unit of time and observed from a certain point of reference, is what is referred to as velocity.

Calculations:

Total kinetic energy will get converted into potential energy

\(\frac{1}{2} m V^{2}\) =  \(m g h\)

M = mass

V = initial velocity

h = maximum height

\(V = 2 g h^{0.5}\)

   =  \((2 * 9.8 * 3.25 )^{0.5}\)  = 7.98 m/s.

To know more about velocity, check out:

https://brainly.com/question/80295

#SPJ1

At aphelion, the Earth is 96% of the Earth-sun distance at aphelion which means that the correct statement is that at aphelion, because the gravitational attraction is lower, the speed of the Earth is higher and is denoted as option B.

This is referred to as the  farthest point in the orbit of a planet such as the earth from the sun.

In a a scenario where the Earth is 96% of the Earth-sun distance at aphelion, then it means that the orbit has almost been completed which means that a high amount of speed was involved in the process.

This is as a result of the gravitational attraction being lower which has an inverse relationship with the speed of the Earth which is why it was higher and is therefore the reason why option B was chosen.

Read more about Aphelion here https://brainly.com/question/913716

#SPJ1

A small CG flash lowers about 3 Coulombs of negative charge to ground in a period of, say, 100 milliseconds. The average current during this time is 30 Amperes.

The rate at which charge flows through a circuit is called current. Charge is calculated in Coulombs (C), and time is calculated in seconds (s). Current is measured in Amperes (A), which is a measure of the number of Coulombs that pass by a certain point in one second.

The formula for calculating current (I) is as follows:I = Q / tWhere Q is the charge that passes a certain point and t is the time it takes for that charge to pass through to the given problem is as follows We can calculate the current during the 100 milliseconds using the given formula,I = Q / tI = 3 C / 0.1 sI = 30 AThus, the average current during this time is 30 Amperes.

To know more about negative charge visit :

https://brainly.com/question/2292900

#SPJ11

C_min = (I_avg * T) / V_ripple. If a full-wave rectifier is needed, the ripple voltage is typically reduced by half compared to a half-wave rectifier. Therefore, the same calculation can be used to determine the minimum smoothing capacitance for the full-wave rectifier.

but with a ripple voltage of half the value used in the half-wave rectifier calculation.Where C_min is the minimum required capacitance, I_avg is the average current, T is the time period of the waveform (in seconds), and V_ripple is the desired peak-to-peak ripple voltage.

In this case, I_avg = 250 mA (or 0.25 A) and V_ripple = 0.2 V. The time period T can be calculated as the reciprocal of the frequency of the AC input signal.

Once you have the time period T, you can substitute the values into the formula to determine the minimum required smoothing capacitance C_min.

Remember to convert all units to be consistent (e.g., A to mA and F to μF) when performing the calculation.

To know more about  rectifier refer here:

https://brainly.com/question/25075033#

#SPJ11

1. 44.1 J is the kinetic energy in joules when it hits the ground

2.0.075 kg   is its mass.

3.11.8 m is distance was the load lifted.

The kinetic energy of a freely falling object can be calculated using the formula KE = 1/2 * m * v^2, where m is the mass of the object and v is its velocity. At the moment of impact with the ground, the velocity of the 2-kg ball can be calculated.

using the formula v = sqrt(2 * g * h), where g is the acceleration due to gravity (9.8 m/s^2) and h is the height fallen. Substituting the values, we get KE = 1/2 * 2 kg * (sqrt(2 * 9.8 m/s^2 * 3 m))^2 = 44.1 J.

The kinetic energy of a moving object can be calculated using the formula KE = 1/2 * m * v^2. We can rearrange this formula to find the mass, m = 2 * KE / v^2. Substituting the given values, we get m = 2 * 900 J / (600 m/s)^2 = 0.075 kg.

The work done by the crane can be calculated using the formula W = F * d, where F is the force exerted by the crane and d is the distance the load is lifted. The force exerted can be calculated using the formula F = m * g, where m is the mass of the load and g is the acceleration due to gravity.

The work done can be calculated as W = m * g * d. We can rearrange this formula to find the distance lifted, d = W / (m * g). Substituting the given values, we get d = (8 hp * 746 W/hp * 15 s) / (100 kg * 9.8 m/s^2) = 11.8 m.

To know more about kinetic energy click on below link:

https://brainly.com/question/26472013#

#SPJ11

Explanation:

hope this helps you

..........

An object at rest on top of a shelf possesses gravitational potential energy. Gravitational potential energy is the energy an object possesses due to its position relative to the Earth's gravitational field. The correct option is B.

When an object is elevated above the ground, it has the potential to fall and convert that potential energy into kinetic energy.

In the given scenario, the object on the shelf is not in motion, but it is elevated above the ground due to its position on the shelf. Therefore, it possesses gravitational potential energy. The magnitude of the gravitational potential energy depends on the mass of the object, the acceleration due to gravity (usually denoted as "g"), and the height of the shelf.

While the object is at rest and not actively using or transforming its energy, it still retains the potential to release its gravitational potential energy if it were to fall from the shelf. The correct option is B.

To know more about Gravitational potential energy, refer here:

https://brainly.com/question/31024811#

#SPJ11

Answer: OLEDs

Explanation:

The nanotechnology uses the surface of the carbon materials to generate the electricity. The evaporation of water on the surface of carbon materials helps in generation of electrical energy due to generation of thermal energy.

OLEDs can be defined as solid-state devices that comprises of organic molecules like carbon that will create electricity by exposing a surface for generation of thermal energy.

Answer:

kamalong with me to the butter fly and bee

Answer: 4K1

Explanation: