PHYSICS HIGH SCHOOL

According to Newton's 2nd law of motion, Jim can throw a _ farther than a _. tennis ball, basketball can of soda, liter bottle of soda chair, couch all of the above

Answers

Answer 1

Answer:

Answer:

All of the above

Explanation:

According to Newton's second law of motion,

$Force = Mass * Acceleration$

If a certain force is applied on objects of different mass, the lighter object will travel farther and faster. All the options in the question have pairs where one object is lighter than other.

So, Jim can throw a tennis ball farther than a basketball. Jim can throw a can of soda farther than a liter bottle of soda and he can throw a chair farther than a couch.

Answer 2

Answer: According to Newton's 2nd law of motion, Jim can throw a tennis ball farther than a basketball. The rest of the choices do not answer the question above.

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How are step-up transformers used in the transmission of electrical energy

Answers

Step-up transformers are used at power stations to produce the very high voltages needed to transmit electricity through the National Grid power lines. These high voltages are too dangerous to use in the home, so step-down transformers areused locally to reduce the voltage to safe levels.

Qualitative methods that encourage participants to reveal hidden or suppressed attitudes, ideas, emotions, and motives are called _____ techniques.

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various techniques I believe

Magnesium is a metal that is commonly used in products that needed to be light weight. Suppose a 2.00kg piece of magnesium has 8160 j of entertainment added to it it's temperature increases 4K what is the specific heat of magnesium

Answers

Given that,

Mass of magnesium, m = 2 kg

Heat added to it, Q = 8160 J

Increase in temperature, $\Delta T=4\ K$

To find,

The specific heat of magnesium.

Solution,

Th formula that is used to find the heat required to raise the temperature in terms of specific heat is given by :

$Q=mc\Delta T\n\nc=(Q)/(m\Delta T)\n\nc=(8160\ J)/(2\ kg* 2\ K)\n\nc=2040\ J/kg-K$

So, the specific heat of magnesium is $2040\ J/kg-K$ .

How do simple machines make work easier? A.They change the strength or direction of a force.

B.They maintain the distance of a force.

C.They apply force quickly.

D.They decrease the power available.

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I believe it is c. hope this Helps :)

What is its characteristic wavelength? [Hint: Recall that the kinetic energy of a moving object is E=12mv2, where m is the mass of the object and v is the speed of the object.]

Answers

Answer:

λ = $1.06 * 10^(-11) m$

Explanation:

Using the De Broglie equation, the characteristic wavelength is given by:

λ = $(h)/(p)$

where

h = Planck's constant = $6.626 * 10^(-34)$ Js.

p = momentum

Momentum, p, can be calculated using:

p = $√(2Em)$

where

m = mass of the electron = $9.11 * 10^(-31)$ kg

E = Energy of the electron = 13.4 keV = $13.4 * 10^3 * 1.6 * 10^(-19)$ J = $2.144 * 10^(-15)$ J

=> p = $\sqrt{2 * 2.144 * 10^(-15) * 9.11 * 10^(-31)}$

p = $\sqrt{3.906 * 10^(-45)}$

p = $6.250 * 10^(-23)$ kgm/s

Therefore, characteristic wavelength, λ, is:

λ = $(6.626 * 10^(-34))/(6.250 * 10^(-23))$

λ = $1.06 * 10^(-11) m$

In physics, the characteristic wavelength is the wavelength associated with an object's kinetic energy. It can be determined using the equations for energy, frequency, and wavelength.

In physics, the characteristic wavelength refers to the wavelength associated with a moving object's kinetic energy. The kinetic energy of an object is given by 1/2mv², where m is the mass of the object and v is its speed.

When an object's kinetic energy is known, we can use the equation E = hf, where E is the energy, h is Planck's constant, and f is the frequency of the wave associated with the object, to find the characteristic wavelength.

The equation is rearranged to solve for f, and then the frequency is used to calculate the wavelength using the formula λ = c/f, where λ is the wavelength and c is the speed of light.

By plugging in the given values of the object's mass and speed, you can determine its characteristic wavelength using these equations.

Learn more about characteristic wavelength here:

brainly.com/question/34267508

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When a baseball player catches a baseball, the glove "gives" or moves backward. How does this movement affect the change in momentum of the baseball? The change in momentum increases because the impact time increases. The change in momentum decreases because the force decreases. The change in momentum stays the same because the ball still comes to a stop. The change in momentum depends on the initial speed of the ball and the time to stop.

Answers

Answer:

The change in momentum increases because the impact time increases.

Explanation:

The change in momentum of an object is also called impulse (J), and it is equal to

$J=F \Delta t$

where

F is the force applied to the object

$\Delta t$ is the time taken for the change in momentum of the object to occur (the impact time)

From the formula above, we can notice that:

- the larger the force, the larger the change in momentum

- the larger the impact time, the larger the change in momentum

In the example of the baseball caught by the glove, when the glove moves backward, the time taken for the ball to stop increases (due to the movement of the gloves). Looking at the formula, we see that this means that the impulse (the change in momentum) increases.

Answer:

The change in momentum stays the same because the ball still comes to a stop.

Explanation:

here we know that momentum is defined as the product of mass and velocity

so here we know that

$P = mv$