PHYSICS HIGH SCHOOL

Will an object with a density of 1.05 g/ml float or sink in water? Explain

Answers

Answer 1

Answer:

The object will sink, because it is more dense than water.

Let's see this in detail. There are two forces acting on the object:

- its weight, which points downward, given by

$W=mg=\rho_o V_o g$

where $\rho_o$ is the object's density, $V_o$ is its volume, and g is the gravitational acceleration.

- The buoyancy force, which points upward, given by

$B=\rho_w V_w g$

where $\rho_w$ is the water density, $V_w$ is the volume of water displaced by the object.

We see that it is always $W>B$ , so the object will sink. In fact:

$\rho_o > \rho_w$ . We are told the object's density is 1.05 g/mL, while the water density is 1.00 g/mL.

$V_o \geq V_w$ : the two volumes are equal when the object is completely submersed, and the volume of water displaced cannot be greater than the volume of the object.

So, W > B, and the object will sink.

Answer 2

Answer: The density of water is very close to 1.0 gm/ml.
The object is more dense than water.
It will sink in water.

Related Questions

If you had two forces, one with a magnitude of 25 N and the the other with a magnitude of 100 N, what would be the maximum net force these forces could exert on an object?
If the index of refraction of a medium is 1.4 determine the speed of light in that Medium
Which of the following is an advantage of geothermal energy?a. Scarcity of suitable sites b. Odor pollution c. Low land use d. Possible depletion of reservoirs
A 3.8 kg object to is lifted 12 meters. approximately how much work is performed during lifing? A) 45.6 J B)588 J C) 466.9J D) 372.4 J
One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate. This creates "artificial gravity" at the outside rim of the station. (a) If the diameter of the space station is 800 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2? (b) If the space station is a waiting area for travelers going to Mars, it might be desirable to simulate the acceleration due to gravity on the Martian surface (3.70m/s2). How many revolutions per minute are needed in this case?

1. -------- of an object is the change in velocity per unit time.a) Displacement b) Acceleration c) Average velocity d) Angular velocity.
2. The motion of freely falling body is an example of ----- motion.
a) Uniform motion b) Non -uniform motion c) Uniformly accelerated motion. d) None of these.

Answers

Answer:

Explanation:

acceleration is defined as the rate of change of velocity with time

A racecar is equipped with a computer that records the reading on its speedometer every second during a race. If you graph this data, what will be the best choice for the dependent variable?

Answers

Since the device is a speedometer, the data it read is the speed of the racecar. Data recording involving time usually uses time as the independent variable. It was also said in the problem that it records the speed every second which shows that the time interval is constant. This means that only other data, the car's speed, is the dependent variable.

Which satellite gave us our first photograph of Earth from space?

Answers

The correct answer is explorer 6

Final answer:

The first satellite to capture a photograph of Earth from space was Explorer 1, launched on January 31, 1958. This and subsequent space missions like the Apollo program expanded our visual understanding and perception of our planet.

Explanation:

The first satellite to give us a photograph of the Earth from space was Explorer 1, launched on January 31, 1958. Prior to Explorer 1, the Soviet Union had launched Sputnik 1 in October 1957, but Explorer 1 was the first satellite to provide us with images of Earth from space. This marked a significant moment in human history, altering our perception of the planet.

Later on, the Apollo program further improved our visual understanding of Earth, with the Apollo 17 mission capturing the 'Blue Marble' - one of the rare full disk images of the Earth in sunlight. Such images underscored our perception of Earth as a small, yet interconnected and strikingly beautiful, celestial body floating in the vastness of space.

Learn more about First Satellite Photograph of Earth here:

brainly.com/question/39155367

#SPJ11

A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called?

Answers

the effect is called The doppler effect

The effect being mentioned is called "The doppler effect".

Calculate the change in momentum of a 45 kg runner who starts out at 1 m/s and speeds up to 3 m/s. Which anser choice is correct 90 kg⋅m/s 45 kg⋅m/s 135 kg⋅m/s 0 kg⋅m/s

Answers

momentum can also be defined in terms of newton second

that is P=F.V

now v =vf-vi

v=3 m/s-1m/s=2 m/s

now F=W=45 kg

therefore

change in momentum=F.v

P=45*2=90 kg.m/s

The atomic number of an element is equal to the number of _____ contained in one atom of that element.

Answers

the atomic number of an element is equal to the number of protons in an atom

Other Questions

A car weighs 186 N. It's being pushed forward by its engine with a force of 942 N.1. What is the normal force acting on the car by the road? N 2. What is the force of friction acting on the car by the road?. N 3. What is the coefficient of kinetic friction between the car and the road?

An object traveling in a straight line accelerates. What will definitely happen due to the acceleration?The distance traveled in a certain time will increase.The displacement covered in a certain time will decrease.The speed of the object will stay constant.The velocity of the object will change.

This exists in the space surrounding a charged particle and exerts a force on other charged particles.

Which of the following is a physical property of wood