A system consists of two particles. The first particle has mass m1 = 6.60 kg and a velocity of (4.20i + 2.00j) m/s, and the second particle has mass m2 = 2.00 kg and a velocity of (2.00i − 3.60j) m/s. (Express your answers in vector form.)Required:
a. What is the velocity of the center of mass of this system?
b. What is the total momentum of this system?
Answers
Answer:
a. 8.465 m/s
b.22.3659
Related Questions
Consider different points along one spoke of a wheel rotating with constant angular velocity. Which of the following is true regarding the centripetal acceleration at a particular instant of time?a. The magnitude of the centripetal acceleration is greater for points on the spoke closer to the hub than for points closer to the rimb. both the magnitude and the direction of the centripetal acceleration depend on the location of the point on the spoke.c. The magnitude of the centripetal acceleration is smaller for points on the spoke closer to the hub than for points closer to the rim but the direction of the acceleration is the same at all points on this spoke.d. The magnitude and direction of the centripetal acceleration is the same at all points on this spoke.
A person on a rocket traveling at 0.47 c (with respect to the Earth) observes a meteor come from behind and pass her at a speed she measures as0.47 c.How fast is the meteor moving with respect to the Earth?
When a 5.0 kg box is hung from a spring, the spring stretches to 50 mm beyond its relaxed length. (a) In an elevator accelerating upward at 2.0 m/s2 , how far does the spring stretch with the same box attached? (b) How fast and in which direction should the elevator accelerate for the spring stretch to be zero (that is, the spring returns to its relaxed length)?
How many hours does earth take to complete one rotation?
1.
the noun that follows the verb and answers the questions
whom or what
linking verb
2. a word that expresses action
sentence
3. who or what the sentence is about
predicate noun
4.
a noun that indicates to or for whom or what something is
done
predicate adjective
5. follows a linking verb and renames the subject
direct object
subject
6. follows a linking verb and describes a subject
verb that joins a subject and a predicate noun or predicate
7.
adjective
indirect object
8. expresses a complete thought
verb
Answers
Answer:
Explanation:
No 1 is linked to the option provided at no 5.
A direct object is the noun that follows the verb and answers the question.
No 2 is linked to the option provided at no 8.
A verb is a word that expresses action.
No 3 is linked to the option provided at no 5.
The subject is what or whom the sentence is about.
No 5 is linked to the option provided at no 3.
A predicate noun follows a linking verb, and renames the subject.
No 6 is linked to the option provided at no 4.
A predicate adjective follows a linking verb, and describes a subject.
No 7 is linked to the option provided at no 1.
A linking verb joins a subject and a predicate.
No 8 is linked to the option provided at no 2.
A sentence expresses a complete thought....
Final answer:
The terms like direct object, verb, subject, indirect object, predicate noun, predicate adjective, and sentence are explained in the context of English grammar and matched to their definitions.
Explanation:
Here are the correct matches for the terms:
- The noun that follows the verb and answers the questions whom or what is typically referred to as the direct object.
- A word that expresses action is a verb.
- Who or what the sentence is about is known as the subject.
- A noun that indicates to or for whom or what something is done is an indirect object.
- Follows a linking verb and renames the subject is a predicate noun.
- Follows a linking verb and describes a subject is a predicate adjective.
- Expresses a complete thought is the definition for a sentence in the context of English grammar.
Learn more about English Grammar Terms here:
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7.) True or False: "Courtney is traveled 5 miles in 3 hours" is an example of
acceleration.
True
False
Answers
Answers
Answer:
Explanation:
Let length of the pendulum be l . The expression for time period of pendulum is as follows
T = 2π
For Mars planet ,
1.5 =
For other planet
.92 =
Squiring and dividing the two equations
The second planet appears to be earth.
O A. 6,658 ft
OB. 25,396 ft
OC. 7,282 ft
OD. 23,219 ft
Answers
What scientific practice is Rhonda performing
Answers
Answer:he conducts the investigation to see the effect acidic water has on limestone
Explanation:
Answers
Answer:
67.5 cm
Explanation:
u = - 90 cm, v = 3 x u = 3 x 90 = 270 cm
let f be the focal length
Use lens equation
1 / f = 1 / v - 1 / u
1 / f = 1 / 270 + 1 / 90
1 / f = 4 / 270
f = 67.5 cm
Final answer:
To determine the focal length of the lens, we use the lens formula and set up an equation based on the given information. Solving for the image distance, we find that it is zero, indicating the image is formed at infinity. Therefore, the focal length of the lens is 90 cm.
Explanation:
To determine the focal length of the lens, we can use the lens formula:
1/f = 1/v - 1/u
Where f is the focal length, v is the image distance, and u is the object distance.
Given that the image distance triples when the object is moved from infinity to 90 cm in front of the lens, we can set up the following equation:
1/f = 1/(3v) - 1/(90)
Multiplying through by 90*3v, we get:
90*3v/f = 270v - 90*3v
90*3v/f = 270v - 270v
90*3v/f = 0
Simplifying further, we find that: v = 0
When the image distance is zero, it means the image is formed at infinity, so the lens is focused at the focal point. Therefore, the focal length of the lens is 90 cm.