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patriot [66]
3 years ago
13

Energy can transform between different types. For each of the following examples, identify two energy transformations and the ty

pes of energy involved in the transformations: Cannonball fired upward from a cannon Diver jumping from a spring board Squirrel jumping from a tree and landing on the net of a trampoline
Physics
1 answer:
Jet001 [13]3 years ago
7 0

1. Cannonball fired upward from a cannon

here in this cannon we can say kinetic energy is converted into potential energy of the cannon.

here this is because when cannon ball is shot with some speed its kinetic energy is converted into potential energy at the top point of its path

2. Diver jumping from a spring board

when diver is jumping on spring board then spring potential energy is converted into kinetic energy of the diver.

here when spring is compressed the energy in it is in the form of spring potential energy while at the other form it is converted into kinetic energy of the diver when he jump off.

3. Squirrel jumping from a tree and landing on the net of a trampoline.

When squirrel is jumping from tree and landing on the net trampoline the gravitational potential energy of the squirrel will transform into the kinetic energy of squirrel and then it is transformed into the potential energy of the net trampoline.

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How much heat is needed to change the temperature of 3 grams of gold (c = 0.129 ) from 21°C to 363°C? The answer is expressed to
madam [21]

The correct answer to the question is : B) 132 Joules.

EXPLANATION :

As per the question, the mass of the gold m = 3 gram.

The initial temperature of the gold T = 21 degree celsius.

The final temperature of the gold  T' = 363 degree celsius.

Hence, the change in temperature  dT = T' - T

                                                          = 363 - 21 degree celsius

                                                          = 342 degree celsius.

The specific heat of the gold is given as c = 0.129\ J/g^0C

We are asked to calculate the heat required ( dQ ) to raise the temperature of gold.

The heat required for this is calculated as -

                                   dQ = mcDT

                                         = 3 × 342 × 0.129 J

                                         = 132.354 J

                                         ≈ 132 J

Hence, the correct answer is 132 J.

8 0
3 years ago
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Difference between hair dryer and heat gun
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The heat gun<span> obviously wins this round. Master Appliance </span>heat guns<span> can reach temperatures of up to 1,000 Fahrenheit. A handheld </span>blow dryer<span> might reach 131 degrees Fahrenheit. A </span>hair dryer<span> gets hot enough to burn skin, but not hot enough to complete serious tasks like striping paint and removing serious. By the way I got this from google.</span>
5 0
3 years ago
An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the radius were changed to 1000 m, but the sp
laila [671]

Answer:

The centripetal acceleration changed by a factor of 0.5

Explanation:

Given;

first radius of the horizontal circle, r₁ = 500 m

speed of the airplane, v = 150 m/s

second radius of the airplane, r₂ = 1000 m

Centripetal acceleration is given as;

a = \frac{v^2}{r}

At constant speed, we will have;

v^2 =ar\\\\v = \sqrt{ar}\\\\at \ constant\ v;\\\sqrt{a_1r_1} = \sqrt{a_2r_2}\\\\a_1r_1 = a_2r_2\\\\a_2 = \frac{a_1r_1}{r_2} \\\\a_2 = \frac{a_1*500}{1000}\\\\a_2 = \frac{a_1}{2} \\\\a_2 = \frac{1}{2} a_1

a₂ = 0.5a₁

Therefore, the centripetal acceleration changed by a factor of 0.5

7 0
3 years ago
What effect does Earth’s spherical shape have on the amount of sunlight that reaches the equator?
Natasha_Volkova [10]
Because the Earth<span> is a sphere, the surface gets much more intense </span>sunlight<span>, hence heat, at </span>the equator<span>than at the poles.</span>
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A table-tennis ball is thrown at a stationary bowling ball. The table-tennis ball makes a one-dimensional elastic collision and
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<u>Option b. </u>A smaller magnitude of momentum and more kinetic energy.

<h3>What is a momentum?</h3>
  • In Newtonian physics, an object's linear momentum, translational momentum, or simply momentum is defined as the product of its mass and velocity.
  • It has both a magnitude and a direction, making it a vector quantity. The object's momentum, p, is defined as: p=mv if m is the object's mass and v is its velocity (also a vector quantity).
  • The kilogram metre per second (kg m/s), or newton-second in the International System of Units (SI), is the unit used to measure momentum.
  • The rate of change of a body's momentum is equal to the net force exerted on it, according to Newton's second law of motion.

To know more about momentum, refer:

brainly.com/question/1042017

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