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# Which tools would be use to find an irregularly shaped object’s mass and volume?

Scales for weight
Any beaker to measure the volume of liquid displaced

## Related Questions

Posted in Physics

Nuclear reactions result in tremendous amounts of a. uranium. b. energy. c. fission. d. mass.

I believe the correct answer from the choices listed above is option B. Nuclear reactions result in tremendous amounts of energy. nuclear reaction is considered to be the process in which two nuclear particles interact to produce two or more nuclear particles or ˠ-rays. Hope this answers the question.

Posted in Physics

The stress force that causes a mass of rock to pull or twist in opposite directions in called ______.

Shearing

The stress force that causes a mass of rock to pull or twist in opposite directions is called shearing.

Hope this helps! :)

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A net force of 125 N accelerates a 25.0 kg mass. What is the resulting acceleration?

Answer: Explanation:

The acceleration of an object can be calculated by using Newton's second law: where

F is the net force applied on the object

m is the mass of the object

a is its acceleration

In this problem, we have F=125 N and m=25.0 kg, so we can rearrange the equation to calculate the acceleration: Posted in Physics

Please help! Find the tension in each cord in the figure if the weight of the suspended object is w = 210N A) Find the tension in the cord A for system (b). B) Find the tension in the cord B for system (b).

We have to solve the system of equations:
- T a * cos 60° + T b * sin 45° - 210 N = 0
- T a * sin 60° + Tb cos 45° =  0
------------------------------------------------------
- 1/2 T a + √2 / 2 T b = 210 N
- √3 / 2 T a + √ 2 / 2 T b = 0     / * ( - 1 )
---------------------------------------------------
- 1/2 T a + √2 / 2 T b = 210 N
√ 3 / 2 T a - √2 / 2 T b = 0
----------------------------------------
T a ( √3 / 2 - 1 / 2 ) = 210 N
0.366 T a = 210 N
T a = 210 N : 0.366
1 ) T a = 573.77 N
Ta * √3 / 2 = T b * √ 2 / 2
T b = ( 573.77 * 1.732 ) : 1.4142
2 ) T b = 702.7 N

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If you increase the force on an item without changing the mass you increase acceleration? true or false?

(F)(M)=A
Force times Mass equals Acceleration.
If the mass increases the number on the left side of the equation increases, thus increasing the right side as well.

Posted in Physics

The acceleration due to gravity on Earth is 9.80 m/s2. An African elephant can have a mass up to 6,050 kg. What is its weight?

The weight on earth is equal to m*g, where m is the mass and g is the gravitational force. 6050 (m) * 9.8 (g) = 59290 Newtons.

Posted in Physics

Rounded to the nearest whole number, what is the atomic mass of platinum? 78 117 195 273

Answer: The atomic mass of the platinum will be 195.

Explanation:

We know that,

Atomic mass is the sum of the electrons and protons.

Platinum is the chemical element and it is the symbol is Pt. The atomic number of the platinum is 78 and the atomic mass is the 195,084 u.

According to the question,

Rounded to the nearest whole number

Hence, The atomic mass of the platinum will be 195.

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What is meant by the following statement? "Acceleration is inversely proportional to mass."

he gave the correct answer its just we had options when we were doing this assignment so thanks for going in depth

Explanation:

Ps Odsseyware

Posted in Physics

Find the equilibrium concentrations of A, B, and C for a=1, b=1, and c=2. Assume that the initial concentrations of A and B are each 1.0 M and that no product is present at the beginning of the reaction. Consider the following reaction and associated equilibrium constant: aA(g)+bB(g)⇌cC(g), Kc = 4.0

The equation for Kc:
Kc = [C]² / [A] [B]

Let the equilibrium concentration of C be x
Then,
the equilibrium concentration of A = 1-x
the equilibrium concentration of B = 1-x

The equation becomes:
4 = x² / (1 - x)²
3x² - 8x + 4 = 0
x = 2, x = 2/3
The first answer is not possible so x = 2/3
[A] = 1 - 2/3 = 1/3
[B] = 1 - 2/3 = 1/3

Posted in Physics

A student hangs a mass of 150 g on a force table at an angle of 150 degrees . If she then hangs a mass of 220 g at 270 degrees. A) at what angle should she hang a mass of 195 g so that the ring is in equilibrium? B) Draw the vectors

Horizontally: 150g*cos150 + 220g*cos270 + 195g*cosΘ = 0
cosΘ = 0.666
Θ = ± 48º
Vertically:
150g*sin150 + 220g*sin270 + 195g*sinΘ = 0
sinΘ = 0.744
Θ = 48º

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A gas has an initial volume of 212 cm^3 at a temperature of 293 K and a pressure of 0.98 atm. What is the final pressure of the gas if the volume decreases to 196 cm^3 and the temperature of the gas increases to 308 K? a. 0.86 atm b. 0.95 atm c. 1.0 atm d. 1.1 atm

For this we use general equation for gases. Our variables represent:

p- pressure
v-volume
t- temperature

P1V1/T1 = P2V2/T2

in this equation we know:
P1,V1 and T1, T2 and V2.
We have one equation and 1 unknown variable.

P2 = T2P1V1/T1V2 = 1.1atm

Posted in Physics

Which of the following is the most appropriate unit to describe the rate at which water flows out through a standard household faucet? Minutes per gallon, because the independent quantity is volume of water in gallons and dependent quantity is time in minutes. Gallons per minute, because the independent quantity is volume of water in gallons and dependent quantity is time in minutes. Minutes per gallon, because the independent quantity is time in minutes and dependent quantity is volume of water in gallons. Gallons per minute, because the independent quantity is time in minutes and dependent quantity is volume of water in gallons.

Gallons per minute, because the independent quantity is volume of water in gallons and dependent quantity is time in minutes.

Explanation:

As we know that gallons is the unit of volume which is used in US to measure volume of gas as well as liquids while time is measured in minutes.

Now we know that if we need to find the volume flow rate then in that case the measurement is done to find the amount of fluid flow per unit of time

so here since volume flow is an independent variable which do not depends on any other parameter while time is a dependent variable here which is given as Gallons per minute, because the independent quantity is volume of water in gallons and dependent quantity is time in minutes.

Posted in Physics

Consider the following geometric solids. A sphere with a ratio of surface area to volume equal to 0.08 m-1. A right circular cylinder with a ratio of surface area to volume equal to 2.1 m-1. What results would you expect if these two models were compared in a diffusion test? A. The rate of diffusion would be the same for the two models. B. The rate of diffusion would be faster for the right cylinder. C. The rate of diffusion would be slower for the right cylinder. D. The rate of diffusion would be faster for the sphere.

Before answering this question, first we have to understand the effect of ratio of surface area to volume on the rate of diffusion.

The rate of diffusion for a body having larger surface area as compared to the ratio of surface area to volume will be more than a body having less surface area. Mathematically it can written as-

V∝ R            [ where v is the rate of diffusion and r is the ratio of surface area to volume]

As per the question,the ratio of surface area to volume for a sphere is given The surface area to volume ratio for right circular cylinder is given Hence, it is obvious that the ratio is more for right circular cylinder.As the rate diffusion is directly proportional to the surface area to volume ratio,hence rate of diffusion will be more for right circular cylinder.

Hence the correct option is B. The rate of diffusion would be faster for the right cylinder.

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Posted in Physics

The force of attraction between two objects, which is related to the object's mass is the definition of

Explanation:

The gravitation force of attraction between the two bodies is directly proportional tp the product of masses of two bodies and inversely proportional to the square of distance between them.

Posted in Physics

A torque of 50 N*m acts on a wheel of moment of inertia 25 kg*m^2 for 4 s and then is removed. b)How many revolutions does it make in 15 s if it starts at rest? I found the angular acceleration, 2 rad/s^2, but I don't know how to find the amount of revolutions.

You have to find the calculate the circumference first then you can just multiply the diameter by π, which is about 3.142. That gives you the distance for each revolution. Then you can multiply by the number of revolutions per minute.

Posted in Physics

A sled and rider, gliding over horizontal, frictionless ice at 4.7 m/s , have a combined mass of 80 kg . The sled then slides over a rough spot in the ice, slowing down to 3.4 m/s . What impulse was delivered to the sled by the friction force from the rough spot? Express your answer to two significant figures and include the appropriate units.

Impulse is the change in momentum.
All we need is the momentum before and after.

Momentum  =  (mass) x (speed)

Before:        =  (80 kg) x (4.7 m/s)  =  376 kg-m/s

After:           =  (80 kg) x (3.4 m/s)  =  272 kg-m/s

Change in momentum  =  (376 - 272) =  104 kg-m/s

Notice that when you work with impulse, you're USUALLY calculating

(force) x (time).

The force is in Newtons, and the time is in seconds,
so the impulse is usually in units of

Newton-seconds .

So how can I say that impulse and change of momentum are
the same thing ?  Am I trying to pull a fast one on you ?

Remember that    1 Newton is  1 kg-m/s²

So                       (force) x (time)

=  (Newton) x (second)

=  (kg-m/s²) x (second)  =  kg-m/s .

and  Momentum = (mass) x (speed)  =  (kg) x (m/s)

The units of impulse are the same as the units of momentum !

So when you give an object some impulse, you give it exactly
that much momentum.

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