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Anton [14]
2 years ago
9

What is the best unit to use when measuring the mass of a mineral sample?

Physics
1 answer:
Ksivusya [100]2 years ago
8 0
Measuring density: Measure the mass (in grams) of each mineral sample available to you. The mass of each sample is measured using a balance or electronic scale. Record mass on a chart.
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1. A Zambeef delivery track travels 18 km north, 10 km east, and 16 km south. What is its final displacement from the origin?
VARVARA [1.3K]

Answer:

2km

Explanation:

Given data

We are told that the direction traveled are

North>>>East>>>South

Hence the displacement is defined as the distance away from the initial position is

Initial position =18km

FInal position = 16km

The displacement = 18-16= 2km

Hence the displacement is 2km

6 0
3 years ago
Scientific theories can change over time as new information is discovered if a scientififc theory changes does this mean that it
Verdich [7]
Not necessarily, it just means that the Scientific theory was not complete and needs additional information, research, and ideas. 
3 0
3 years ago
Read 2 more answers
PLEASE HELP what is the velocity of an airplane that travels 1,200 km in 2.2 hours​
MA_775_DIABLO [31]
90.9 is the velocity of an airplane
7 0
2 years ago
A 75 kg man and a 100. Kg woman are playing tug of war on a frictionless surface. The man accelerates toward the woman at 2.0 m/
Artemon [7]

Complete Question

A 75 kg man and a 100. Kg woman are playing tug of war on a frictionless surface. The man accelerates toward the woman at 2.0 m/s2.How much force does she use to pull on the rope

Answer:

The value is  F  =  150 \  N

Explanation:

From the question we are told that

    The mass of the man is  m_m   =  75 \  kg

     The mass of the woman is  m_f  =  100 \  kg

     The acceleration of the man is  a_m  =  2.0 \  m/s ^2

Generally the force which she used to pull the rope is mathematically represented as  

           F  =  m  *  a

=>         F  =  75 *  2

=>         F  =  150 \  N

6 0
3 years ago
A spring (70 N/m ) has an equilibrium length of 1.00 m. The spring is compressed to a length of 0.50 m and a mass of 2.0 kg is p
madreJ [45]

Answer:

Part a)

L = 0.68 m

Part b)

L = 0.63 m

Explanation:

Part a)

As we know that there is no friction in the path

So here we can use energy conservation to find the distance moved by the mass

Initial spring energy = final gravitational potential energy

so we will have

\frac{1}{2}kx^2 = mgL sin\theta

\frac{1}{2}70(0.5)^2 = 2(9.81)(L) sin41

8.75 = 12.87 L

L = 0.68 m

Part b)

Now if spring is connected to the block then again we can use energy conservation

so we will have

\frac{1}{2}kx^2 = mg(x + x')sin\theta + \frac{1}{2}kx'^2

so we will have

\frac{1}{2}(70)(0.5^2) = 2(9.81) (0.50 + x') sin41 + \frac{1}{2}(70)x'^2

8.75 = 6.43 + 12.87 x' + 35 x'^2

x' = 0.13 m

so total distance moved upwards is

L = 0.5 + 0.13 = 0.63 m

8 0
3 years ago
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