I need help asap. #3, 12points

Answer:

s = d/t

s = 230/2

s = 115 mph

Explanation:

Average Speed (s) = Distance travelled (d) / Time elapsed (t)

Answer:

The difference in the amount of energy transferred by the two bulbs is 1200 J.

Explanation:

The energy transferred by the two lightbulbs can be calculated with the given equation:

[tex] E = P*t [/tex]

Where P is the power and t is the time

For the 60 W lightbulb:

[tex] E_{60} = P*t = 60 W*30 s = 1800 J [/tex]

For the 100 W lightbulb:

[tex] E_{100} = P*t = 100 W*30 s = 3000 J [/tex]

Hence, the difference in the amount of energy transferred is:

[tex] E_{t} = E_{100} - E_{60} = 3000 J - 1800 J = 1200 J [/tex]

Therefore, the difference in the amount of energy transferred by the two bulbs is 1200 J.

I hope it helps you!

The difference in the amount of energy transferred by the two bulbs during this time is 1200 J.

We know that

E = P*t

Here

P means the power and T means the time

So for 60W lightbulb, the energy should be

= 60*30

= 1800J

For 100 W, the energy should be

= 100*30

= 3000 J

So, the difference is

= 3000 -1800

= 1200 J

hence, The difference in the amount of energy transferred by the two bulbs during this time is 1200 J.

Learn more about energy here: https://brainly.com/question/24401678

Answer:

Please find the answer in the explanation

Explanation:

Friction is a force that opposes motion. One or two of the advantages of friction are break and ability of an object to walk.

Writing yes it is useful because when your writing because friction helps you see what your writing

ii. Rubbing. Yes, it is useful.

friction make it possible for two object to rub each other

iii. Skiing. No. It is not useful because With presence of friction, skiing will not be possible.

iv. Rotating a wheel No. It is not useful because Friction will oppose the rotation of the wheel.

Answer:

The stone thrown upward lands farther away from the building.

Explanation:

Given that,

Angle = 30° above the horizontal

Speed = 18.0 m/s

Angle = 30° below the horizontal

Suppose, Which stone lands farther away from the building ?

We need to find which stone lands farther away from the building

Using formula of range

[tex]R=v_{x}t[/tex]

The horizontal velocity for the both stones is equal but the time will be different.

The time of stone thrown upward will be greater than that of downward.

Hence, The stone thrown upward lands farther away from the building.

Answer:

HOW NEWTON'S LAWS RELATE TO REAL WORLD LIFE EXPERIENCE

Newton's law are very important because they tie into almost everything we see in everyday life. These laws tell us exactly how things move or sit still, like why you don't float out of bed or fall through the floor of your house. Newton's laws control how cars work, how water flows, how buildings don't fall down, and basically how everything around us moves.

EXAMPLE OF NEWTON'S LAW:

° First Law: Inertia

°Second Law: Force and Acceleration

°Third Law: Action and Reaction

HOW NEWTON'S LAW RELATE TO REAL LIFE EXPERIENCE

FIRST LAW (INERTIA) :

If you throw a rock straight up, it will not vary from its direction. Inertia enables ice skaters to glide on the ice in a straight line. If the wind is blowing, a tree's branches are moving. A piece of ripe fruit that falls from the tree will fall in the direction the wind is moving because of inertia.

SECOND LAW (FORCE AND ACCELERATION) :

The use of force in our everyday life is very common. We use force to walk on the road, to lift the objects, to throw a cricket ball, or to move a given body by some particular speed or direction. We are very familiar with the various effects of force. We can exert pull and push. And also When the car slows down. When you fall off a bridge. The car turning at the corner is an example of acceleration because the direction is changing. The quicker the turns, the greater the acceleration.

THIRD LAW (ACTION AND REACTION) :

For example, when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. Engineers too apply Newton's third law when designing rockets and other projectile devices.

Answer:

Explanation:

The distance covered by an object given it's velocity and time taken can be found by using the formula

From the question

velocity = 4.2 m/s

time = 17 s

We have

distance = 4.2 × 17

We have the final answer as

Hope this helps you

Answer:

A.125

Explanation:

Its correct on Schoology.

Answer:

Capsule (endoscopy)

Explanation:

The capsule endoscopy is a procedure whereby a pill containing a micro-camera is swallowed by a diagnostic patient. The capsule conveniently goes through the patient's digestive system tract and takes several thousands of images of the small and large intestines and as it travels through the digestive tract without causing pain or irritation to the patient.

Answer:

The answer is pill-cam.

Explanation:

Explanation:

The letter r stands for the radius of the sphere, which is the distance from the center of a sphere to its surface. The radius is exactly half of the diameter , which is the ...

Answer:

The answer is C. 129.83 grams

Answer:

it is a branch of tissue and organs . More it includes airways lungs and blood cells The muscles that power our lungs are also part of respiratory system .These parts work together to inhale oxygen and clean out waste materials(carbon dioxide) from our body .

Answer:

B and D

Explanation:

Answer:

15mph

Explanation:

Because you've already done distance and time. Speed=distance divided by time. so it would be 300 divided by 20 giving you 15.

Given parameters:

Distance of Pigeon Forge = 58.25miles

Speed  = 62.5mile/hr

Unknown:

Time it will take Billy to get to Pigeon Forge = ?

Solution:

Speed is a physical quantity and it is the rate of change of distance with time.

       Speed  = [tex]\frac{distance}{time}[/tex]

     Now let us input the parameters and find the time;

               62.5  = [tex]\frac{58.25}{t}[/tex]

              58.25  = 62.5t

                   t = [tex]\frac{58.25}{62.5}[/tex]   = 0.93hrs

Time taken for him to get there is 0.93hrs

Answer:

If you are talking about the chemicals...

Explanation:

"Sugar, salt, nitrites, butylated hydroxy anisol (BHA), butylated hydroxyl toluene (BHT), tert-butylhydroquinone (TBHQ), vinegar, citric acid, and calcium propionate are all chemicals that preserve foods. Salt, sodium nitrite, spices, vinegar, and alcohol have been used to preserve foods for centuries."

Hope this is helpful!!

Answer:

a spring tide occurs

Explanation:

ithe gravitational pull makes that tide happen

Answer:

You will need to stop at least 20 m before you hit the elk.

Explanation:

Answer:

a

Explanation:

Answer:

5 bulldogs

Explanation:

you need 4 bulldogs to beat 40 dragons, but since you would still need 3 dragons defeated, you would need another bulldog

Answer:

Another new technology in cancer treatment is Image Guided Radiation Therapy (IMGT), which also employs linear accelerators. IMGT allows for even more precise radiation treatment because it uses technology that can recognize the size and shape of the tumor within the body.

Explanation:

Answer:

(a) 1.6 N/C, due east.

(b) 4 N/C, due east.

Explanation:

The force vector,[tex]\vec {F}[/tex] on the charge, q, in the electric field vector, [tex]\vec{E}[/tex], is

[tex]\vec {F}=\vec{E}q[/tex]

[tex]\Rightarrow \vec{E}=\frac{vec{F}}{q}\;\cdots(i)[/tex]

Let the unit vector towards east is [tex]\hat{i}[/tex], so the unit vector towards west is -

(a) Given that:

[tex]q=+25 \mu C[/tex],

[tex]\vec{F}=40.0 \mu N[/tex], due east

[tex]\Rightarrow \vec{F}=40.0 \mu N (\hat{i})[/tex]

From equation (i)

[tex]\vec{E}=\frac{40.0 \mu N (\hat{i})}{25 \mu C}=1.6(\hat{i}) N/C[/tex]

So, the magnitude of electric field is 1.6 N/C and the direction is towards east.

(b) Given that:

[tex]q=-10.0 \mu C[/tex],

[tex]\vec{F}=40.0 \mu N[/tex], due west

[tex]\Rightarrow \vec{F}=40.0 \mu N (-\hat{i})[/tex]

From equation (i)

[tex]\vec{E}=\frac{40.0 \mu N (-\hat{i})}{-10 \mu C}=-4(\hat{i}) N/C[/tex]

[tex]\Rightarrow \vec{E}=4(\hat{i}) N/C[/tex]

So, the magnitude of electric field is 4 N/C and the direction is towards the east.

Answer:8

Explanation: 134.4 divided by 16.8

mechanical energy

Explanation:

its right

Explanation:

Answer:

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume = 78.0 mL

density = 1.85 g/mL

We have

mass = 78 × 1.85 = 144.3

We have the final answer as

Hope this helps you

Answer:C

Explanation:

She used 2 different amounts of salts so that was her mistake she should of used 1