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3 years ago

Consider the data collected in science class. Different masses were thrown with varied amounts of

Physics

2 answers:

hichkok12 [17]3 years ago

6 0

Answer:

a. in all cases, the acceleration was the same

Explanation:

Do the math - F = ma. In each case, the acceleration is 5 m/s2.

lesya [120]3 years ago

4 0

Answer:

A: In all cases, the acceleration was the same.

Explanation:

I know this because its a clear obvious answer not only that it was one of my USA TESTPREP questions and it was right.

All you mainly have to do is the math - F=ma , In each case , the acceleration is 5 m/s squared

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A cyclist travels 36km in 3 hours. What is the cyclist’s average speed?

dybincka [34]

To determine what the cyclists average speed is, simply divide the distance the cyclist has travelled by the time the cyclist has traveled for.

Assuming that this is the average rate the cyclist is moving at it would be 12 km/hr.

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3 years ago

How can you tell the direction a river flows

NARA [144]

Answer: Regarding the image posted, a unicellular paramecium relies on mitosis for reproduction.

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3 years ago

A grocery shopper tosses a(n) 9.4 kg bag of rice into a stationary 19.9 kg grocery cart. The bag hits the cart with a horizontal

IRINA_888 [86]

The final speed of the cart and the bag is 2.2 m/s

Explanation:

We can solve this problem by using the law of conservation of momentum: in fact, in absence of external forces, the total momentum of the bag and the cart must be conserved before and after the collision.

Mathematically:

$p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v$

where:

$m_1 = 9.4 kg$ is the mass of the bag of rice

$u_1 = 7.0 m/s$ is the initial velocity of the bag

$m_2 = 19.9 kg$ is the mass of the cart

$u_2 =0 m/s$ is the initial velocity of the cart (at rest)

$v$ is the final combined velocity of the bag and the cart

Re-arranging the equation and solving for v, we find:

$v=\frac{m_1 u_1 + m_2 u_2}{m_1+m_2}=\frac{(9.4)(7.0)+0}{9.4+19.9}=2.2 m/s$

Learn more about momentum here:

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3 years ago

14. The United States Tobacco Settlement between the major tobacco companies and 46 states caused the price of cigarettes to jum

AysviL [449]

Answer:

B. The elasticity of demand is -0.126

Explanation:

% Change in Quality demand = -2.65% (negative because of drop)

% Change in price = 21%

Elasticity of demand is given by

$\text{Elasticity of demand}=\dfrac{\text{\% Change in Quality demand}}{\text{\% Change in price}}\\\Rightarrow \text{Elasticity of demand}=\dfrac{-2.65}{21}\\\Rightarrow \text{Elasticity of demand}=-0.12619$

The Elasticity of demand is -0.12619

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4 years ago

Which of these results from destructive interference?

Mazyrski [523]

Based on the options given, the answer is two waves subtract from each other. Destructive interference happens when two waves meet each other however with different frequencies cancel each other out.

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8 0

3 years ago