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3 years ago

In a lab, the mass of object a is 52 kg. object a weighs

Physics

2 answers:

zaharov [31]3 years ago

6 0

Complete Question:

In a lab, the mass of object A is 52 kg. What does Object A weigh?

Answer:

weight = 509.6 Newton

Explanation:

The mass of an object is a scalar quantity. This is the amount of matter present in an object. Mass is measured by using a balance. The mass of an object does not change. it is the same for a particular object anywhere. The S.I unit for mass is kilograms . It can also be measured in grams too.

The weight of an object is a vector quantity. It has both magnitude and direction .The weight of an object is the force acting on it. The force might be due to gravity or a reaction force. The S.I unit for weight is Newton. The weight is measured on a scale. The weight of an object can change with location.

The measured mass of object A is 52 kg . The weight can be computed as

weight = mass × gravitational acceleration

mass = 52 kg

gravitational acceleration = 9.8 m/s²

Weight = 52 × 9.8

weight = 509.6 Newton

aksik [14]3 years ago

5 0

If you are asking for the weight then the formula is F=mg where f is weight m is mass and g is acceleration due to gravity.m=52kg and g=9.8m/s2(the gravity of earth)
F=52*9.8=509.6
therefore the weight of the object is 509.6N

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The kinetic energy of toast is 0.06 J.

<u>Explanation:</u>

Kinetic energy is the way to determine the energy released when an object is in motion. In other times, it can be the energy required to move any object and to make it in motion.

As the mass of the toast is given as 8 g and speed is given as 15 m/s, if we ignore the friction caused by air molecules. Then the kinetic energy is the product of mass and square of velocity.

K.E. = $\frac{1}{2}$ × mass × v²

Kinetic energy = $\frac{1}{2} \times \frac{8}{1000} \times 15$

Since, the weight is given in grams , it needed to be converted into kg.

Kinetic energy = 0.06 J

Thus, the kinetic energy of toast is 0.06 J.

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The top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.

Lesechka [4]

The top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it. Because the contact between the bolt and the pliers working surface is less.

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Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of the given mechanical machine.

The efficiency to open the stubborn bolt depends upon the contact between the working surface of the pliers and the bolt.

The contact between the bolt and the top pair of pliers working surface is less. Its mechanical advantage is less.

Hence, the top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.

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3 years ago

Consider an insulated tank with a volume V = 2 L is separated into two equal-volume parts by a thin wall. On the left is an idea

steposvetlana [31]

Answer

given,

V = 2 L

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3 years ago

A carnival Ferris wheel has a 15-m radius and completes five turns about its horizontal axis every minute. What is the accelerat

Tanzania [10]

If a Ferris wheel has a 15-m radius and completes five turns about its horizontal axis every minute then the acceleration of a passenger at his lowest point during the ride is 4.11 $\text{m/s}^{2}$ .

Calculation:

Step-1:

It is given that the radius of the Ferris wheel is r=15 m, and the angular speed of the wheel is $\omega$ =5rev/min.

It is required to find the angular acceleration of a passenger at his lowest point during the ride.

The formula required to calculate the angular acceleration is, $a=\omega ^2 r$ .

Step-2:

Now substituting the given values into the equation to get the value of the angular acceleration.

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The acceleration is towards upwards that means towards the center of the wheel.

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