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Anarel [89]
3 years ago
14

An object moves in a circular path at a constant speed. What is the relationship between the directions of the object's velocity

and acceleration vectors? (a)-The velocity and acceleration vectors point in opposite directions. (b)-The velocity and acceleration vectors are perpendicular. (c)-The velocity vector points in a direction tangent to the circular path. The acceleration is zero.
(d)-The velocity vector points toward the center of the circular path. The acceleration is zero. (e)-The velocity and acceleration vectors point in the same direction.
Physics
1 answer:
Reil [10]3 years ago
3 0

Answer:

b

Explanation:

When an object is in circular motion, the direction of velocity is in the direction of tangent to the circle and acceleration is always directed towards the radial direction. This means that velocity is always perpendicular to acceleration of the object.

Hence option  (b)-The velocity and acceleration vectors are perpendicular is correct.

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What is the best example of physical contamination?
jonny [76]
I might be wrong but I’d say the first one

Answer:
•when a food service worker touches food

Explanation:
The worker is physically putting his hands on the food, therefore contaminating it which whatever’s on his hands

-YW!! <33
6 0
3 years ago
Large sections of troposphere with same temperature and humidity is called
77julia77 [94]

Answer:

air mass

Explanation:

These are known as the air mass. However, the air mass results in sever storms at times. The storms are known as tornadoes. The storms are also very powerful as they can cause the distraction of everything in their path.In addition, the large sections result in the different types of air masses. These air masses are known as:

  • polar
  • tropical
  • continental and
  • maritime.
7 0
3 years ago
Which car has the most kinetic energy?
mixas84 [53]

Answer:

B. A car of mass 2000 kg with speed 7 m/s

Explanation:

The kinetic energy of an object is given by:

K=\frac{1}{2}mv^2

where m is the mass of the object and v is its speed.

From the formula, we see that the larger the mass and the speed of the object, the larger its kinetic energy. Among the choices given, we see that the car with largest mass and largest speed is car B, which has a mass of 2000 kg and speed of 7 m/s. Its kinetic energy is:

K=\frac{1}{2}(2000 kg)(7 m/s)^2=49,000 J

We can verify that the other cars have smaller kinetic energy. In fact:

- Car A: K=\frac{1}{2}(1000 kg)(3 m/s)^2=4,500 J

- Car C: K=\frac{1}{2}(1000 kg)(7 m/s)^2=24,500 J

- Car D: K=\frac{1}{2}(2000 kg)(3 m/s)^2=9,000 J

So, car B is the one which has most kinetic energy.

5 0
4 years ago
These has two questions, any help would be much appreciated. Ignore the current answers.
Sati [7]
Bro sorry I don’t know these answer but keeep trying
4 0
3 years ago
Before collecting a specimen of urine or feces, the nursing assistant asks the nurse or consults the lab for?
bulgar [2K]

Before collecting a specimen of urine or feces, the nursing assistant asks the nurse or consults the lab for which storage and delivery method to use.

There are different tests that need to be performed on a urine or feces specimen. It depends on the patients that which test would be asked for him to be done.

The storage and delivery methods for urine and feces in the case of different tests has to be consulted by the nurse or consultant.

Incase of an emergency test, whose results are immediately required the method of delivery is a fast mode one. For patients that have a mild disease or are not at risk, other reliable methods can be used. Each specimen should be properly labeled for proper checking.

To learn more about urine specimen, click here:

brainly.com/question/28329488

#SPJ4

8 0
2 years ago
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