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3 years ago

A Me and Ed's Pizza has 16 slices. John eat 7/12pieces of pizza. Harold

Physics

1 answer:

aksik [14]3 years ago

5 0

Answer:

Explanation:

Total number of slices in the pizza = 16

Total number ate by John,

J = 7/12 * 16 = 28/3 = 9.3

Total number ate by Harold,

H = 4/23 * 16 = 2.783

Total number left over

L = 1/23 * 16 = 0.696

Total number ate by Betty

B = ?

All we have to do to get the total number eaten by Betty is to sum up that eaten by Harold and John, including the left over, then subtract it from the total pizza slices.

Betty = Total - (Harold + John + Left Over)

Betty = 16 - (9.3 + 2.783 + 0.696)

Betty = 16 - 12.779

Betty = 3.221

Therefore, Betty ate 3.221 of the total pizza as a whole

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nasty-shy [4]

Answer: The ball is travelling with a speed of 5.5 m/s after hitting the bottle.

Explanation:

To calculate the speed of ball after the collision, we use the equation of law of conservation of momentum, which is given by:

$m_1u_1+m_2u_2=m_1v_1+m_2v_2$

where,

$m_1,u_1\text{ and }v_1$ are the mass, initial velocity and final velocity of ball.

$m_2,u_2\text{ and }v_2$ are the mass, initial velocity and final velocity of bottle.

We are given:

$m_1=0.4kg\\u_1=18m/s\\v_1=?m/s\\m_2=0.2kg\\u_2=0m/s\\v_2=25m/s$

Putting values in above equation, we get:

$(0.4\times 18)+(0.2\times 0)=(0.4\times v_1)+(0.2\times 25)\\\\v_1=5.5m/s$

Hence, the ball is travelling with a speed of 5.5 m/s after hitting the bottle.

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3 years ago

Example of items that changed chemically

Ostrovityanka [42]

Burning of gases is one the example of chemical change

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4 years ago

Which explains why conduction is unlikely when ice is placed on a freezer shelf? There is no direct contact. The ice is too cold

Ghella [55]

Answer: The ice and shel are at the same temperature.

Explanation: Conduction happens when you have two objects at different temperatures touching each other, in this case, the temperature flows from the hot object to the cold one, until the equilibrium is reached (this means that both objects are at the same temperature). So, in order to conduction to happen, we need a difference in temperature and direct contact. So there are two options of the given that can be the answer: "There is no direct contact" In the sentence says that "the ice is placed on the freezer shelf", so we have direct contact between both objects. "The ice and shelf are at the same temperature" Here both objects are inside of the freezer, so we can expect that both of them are at the same temperature, hence, there is no conduction.

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3 years ago

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lana [24]

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4 years ago

A radio technician measures the frequency of an AM radio transmitter. The frequency is . What is the frequency in megahertz?

ycow [4]

Answer:

Explanation:

The value of the frequency is not given. Lets assume it to be 14603 kHz. the question now becomes:

A radio technician measures the frequency of an AM radio transmitter. The frequency is 14603 kHz . What is the frequency in megahertz?

Answer:

kilo to mega = 10^-3

then

14603 kHz = 14603 *10^-3 MHz = 14.603 MHz

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4 years ago