what would be the final temperature of a mixture of 50g water at 20c temperature and 50g of water at 40c temperature?

Answers

Answer 1

Answer: Because there is the same amount of water in each sample, the samples have an equal amount of influence over the overall temperature. that means it will be somewhere right in the middle of the two original temperatures. The middle, also the average, of the two samples' temperatures is 30c, meaning that if you combined the 20c water and the 40c water the final result would be 100g of 30c water. If you need some more explanation, just ask.

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A driver in a Volkswagen bug (mass = 1335 kg) pulls out going 10 miles per hour in front of a Ford pickup truck (mass = 2675 kg) which is traveling 40 miles per hour. The two vehicles experience a head-on collision. Which of the following statements is true concerning the forces that each vehicle (and driver) experience in this collision? a. The Volkswagen bug experiences a much greater force than the Ford pickup truck due to the greater speed of the truck. b. The Volkswagen bug experiences a much greater force than the Ford pickup truck due to the larger mass of the truck. c. The Volkswagen bug experiences a force that is the same as the Ford pickup truck experiences. d. The Volkswagen bug experiences a much smaller force than the Ford pickup truck due to the smaller speed of the Volkswagen bug. e. The Volkswagen bug experiences a much smaller force than the Ford pickup truck due to the smaller mass of the Volkswagen bug

how should the charge q be divided into two parts such that they experience maximum electrostatic repulsion

Answers

Answer:

To divide the charge q into two parts such that they experience maximum electrostatic repulsion, the charges should be equal in magnitude and opposite in sign. In other words, the charge q should be divided into two equal charges of -q/2 and +q/2. This arrangement will result in the maximum electrostatic repulsion between the charges, as like charges repel each other.

Explanation:

Every 10 seconds a pendulum completes 2 cycles. what are the period and frequency of this pendulum

Answers

If it completes 2 cycles in 10 seconds, then each cycle
takes 5 seconds. That's the period.

Frequency = 1 / period = 1 / 5 sec = 0.2 per sec = 0.2 Hz.

period 5 sec = 1 cycle
f = 1/period
.2

Physics help!! 10ptA small object placed in the gravitational field of a more massive object will

A. accelerate toward the more massive object.
B. accelerate away from the more massive object.
C. move toward the more massive object at a constant speed.
D. move away from the more massive object at a constant speed.

Answers

A. accelerate toward the more massive object is your answer. In fact, even the acceleration with accelerate, also known as the jer.k. The more massive object will pull on the smaller object and the smaller object will increase its speed towards the more massive object.

idk why jer.k is a swear

Gravitational forces always appear in equal and opposite pairs.

When a small object is placed in a position near a more massive
object, there is a gravitational force on each object, attracting it
and drawing it toward the other one.

The force on the small object causes it to accelerate toward
the more massive one. The force on the more massive object
causes it to accelerate toward the smaller one.

The forces are equal. But since acceleration is inversely
proportional to mass, the small object heads toward the
more massive one with greater acceleration, and the more
massive object heads toward the smaller one with smaller
acceleration.

When you jump into the pool from the high diving board,
you accelerate toward the Earth, and the Earth accelerates
toward you. The gravitational forces between you and the
Earth are equal in both directions. But the Earth has more
mass than you have, so its acceleration toward you is smaller
than your acceleration toward it.

Which is the best description of a change in society that has resulted from advances in understanding the causes of diseases?

Answers

The best answer to the question stated above is letter B.
Improved methods of sanitation best describes the change in society that has resulted from advances in understanding the causes of diseases.

Choices to this question are:
A. An increased number of hospitals
B. improved methods of sanitation
C. improved use of microscopes
D. increased wages for healthcare workers.

The correct answer is B. improved methods of sanitation on e2020.

When work is done on an object, the object gains energy. true or false

Answers

True. When work is done on an object, the object gains energy

Answer:

True

Explanation:

i took the quiz

What is meant by fundamental unit? write any two difference between mass and weight.

Answers

Answer:

Fundamental unit is any unit that is not dependent on other units and other units can be derived from them

Explanation:

Units such as Kilogram, Mass and Time are said to be fundamental units because they are independent.

Differences between Mass and weight;

1. Mass is the measure of the amount of matter in a body while weight is a measure of how the force of gravity acts upon that mass.

2. Mass is a scalar quantity while weight is a vector quantity

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