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Yanka [14]
3 years ago
6

In our new car, we were able to drive 30 miles in a half an hour. From this information, we can determine the car's

Physics
1 answer:
Ronch [10]3 years ago
5 0
Average speed.
(Not velocity.)
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9. A bicycle tire is spinning clockwise at 3.80 rad/s. During a time period of t = 2.35 s, the tire is stopped and spun in the o
Dima020 [189]

Answer:

option E

Explanation:

given,

angular speed of bicycle tire ()= 3.80 rad/s

time period = 2.35 s

tire stops and spun in opposite direction with angular velocity =  3.80 rad/s

average angular acceleration

initial angular speed = ω₀ = - 3.80 rad/s

final angular speed = ω₁ = 3.80 rad/s

change in angular velocity

\Delta \omega = \omega - \omega_0

\Delta \omega = 3.80 - (-3.80)

\Delta \omega = 7.6\ rad/s

average angular acceleration

\alpha = \dfrac{\Delta \omega}{t}

\alpha = \dfrac{7.6}{2.35}

\alpha = 3.23\ rad/s^2

approximately equal to 3.4 rad/s²

the correct answer is option E

4 0
3 years ago
A scientist wants to know if adults prefer watching movies in a theater or in their home. He interviews 500 people leaving a loc
Alex777 [14]

Answer:

The location of the survey is biased.

Explanation:

If someone left a movie theater, it is most likely because he likes watching movies there. A better place to interview would be on the streets, as it’s less biased there

8 0
3 years ago
an object placed in a graduated cylinder raises the volume from 12.2mL to 14.5 mL. Find the volume of the object
Irina18 [472]
Honestly, look it up on google. It will give you the formula instantly. Like what I did, and here's your answer V(Volume) = Pie(3.14) x R(Radius)Squared(x2) x H(Height)
4 0
3 years ago
Read 2 more answers
When ionizing radiation strike atoms or molecules in their paths they cause _____
Brrunno [24]

Answer:

C) ions or free radicals, highly reactive species that can cause undesirable effects in living tissue.

Explanation:

Ionizing radiation is a type of energy released by atoms in the form of electromagnetic waves or particles

When a cell absorbs radiation, there are four possible effects on the cell.

• The cell may suffer enough damage to cause loss of proper function, and the cell will die.

• The cell may lose its ability to reproduce itself.

• The cell’s genetic code (i.e., the DNA) may be damaged such that future copies of the cell are altered, which may result in cancerous growth.

• The absorption of radiation by a cell may have no adverse effects.

The detrimental effects of ionizing radiation (IR) involve a highly orchestrated series of events that are amplified by endogenous signaling and culminating in oxidative damage to DNA, lipids, proteins, and many metabolites. Despite the global impact of IR, the molecular mechanisms underlying tissue damage reveal that many bio molecules are chemo selectively modified by IR

Hence the correct answer is C.

7 0
3 years ago
When is the absorption spectrum of an electron generated
serious [3.7K]
A
Excitation to a higher energy state requires energy which is absorbed from the electromagnetic waves applied.
7 0
3 years ago
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