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3 years ago

According to Newton's second law of motion what is force equal to

2 answers:

8 0

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the netforce, and inversely proportional to the mass of the object

IrinaVladis [17]3 years ago

6 0

Explanation:

According to Newton's second law of motion, the force is equal to the product of mass and acceleration of the object. Mathematically, it is given by :

$F=m\times a$

It is also defined as the rate of change of linear momentum is directly proportional to the applied external force i.e.

$F=\dfrac{dp}{dt}$

If the momentum of the system is constant, the net force acting on it is equal to 0. Hence, this is the required solution.

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3 years ago

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Answer:

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3 years ago

A student drops two metallic objects into a 120-g steel con- tainer holding 150 g of water at 25°C. One object is a 200-g cube o

marissa [1.9K]

Answer:

The mass of the aluminum chunk is 258 g

Explanation:

Given;

mass of steel container = 120-g

mass of water = 150 g

initial temperature of water, = 25°C

mass of copper cube, $M_{cu}$ = 200 g

initial temperature of the copper cube, $T_c_u$ = 85°C

initial temperature of the aluminum chunk $T_A_l$ = 5.0°C

Neglecting heat loss, heat exchanged by the two metallic objects is the same since initial temperature is equal to final temperature of water.

$M_{Al}C_{Al} \delta T_{Al} = M_{cu}C_{cu} \delta T_{cu}$

where;

$C_{AL}$ is specific heat capacity of aluminum

$\delta T_{Al}$ is change in temperature of aluminum

$C_c_u$ is the specific heat capacity of copper

$\delta T_c_u$ is the change in temperature of copper

$M_{Al}C_{Al} \delta T_{Al} = M_{cu}C_{cu} \delta T_{cu} \\\\M_{Al} = \frac{M_{cu}C_{cu} \delta T_{cu}}{C_{Al} \delta T_{Al}} \\\\M_{Al} = \frac{0.2*387*60}{900*20} = 0.258 \ kg$

Therefore, the mass of the aluminum chunk is 258 g

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3 years ago

What is an amu? lol I'm asking alot of questions

forsale [732]

Atomic Mass Unit is the answer

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2 years ago

Crest : trough :: compression : _____ A. frequency B. amplitude C. rarefaction D. wavelength

9966 [12]

Rarefraction.

Crest- tallest spot on transverse wave.

Trough- shortest point on transverse wave.

Compression - spot on a compressional wave where the waves are closer together.

Rarefraction - spot on a compressional wave where the waves are farther apart.

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3 years ago