Which scientist first stated the relationship between buoyant force and weight of displaced fluid

Answers

Answer 1

Answer:

Answer:

Archimedes

Explanation:

Archimedes suggested in his work, called On Floating Bodies that "Any object, totally or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object." This was later known as the Archimedes principle.

Answer 2

Answer: He was Archimedes of Syracuse.

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An advertisement claims that a certain 1200kg can accelerate from rest to a speed of 25 m/s in a time of 8s. What average power must the motor develop to produce this acceleration if the car is going up a 20 degree incline? Give your answer in Watts. Ignore friction.

Answers

Answer: 3MW

Explanation:

W = 1/2 mv^2

W = 0.5 x 1200 x 25^2 = 375 kW

T = 8s

P= 335 x 10^3 x 8 = 3,000 kW = 3MW

Eric traveled east for 150 miles in 2 hours. Then he went west for 40 miles in 1 hour. What is the average velocity?

Answers

Answer:

190 is the average velocity.

Explanation:

Just add them together

Well-designed weight-training programs only target two or three body areas.a. True
b. False

Answers

False, well designed weight training programs actually target most of the muscles in the body. A good weight training program includes many compound exercises to activate multiple muscle groups and promote muscle hypertrophy. Some isolation exercises may also be included to target a specific muscle and help it grow.

Well-designed weight-training programs do not only target two or three body areas.

The statement that well-designed weight-training programs only target two or three body areas is FALSE.

Well-designed weight-training programs aim to target different muscle groups in the body to promote overall strength and balanced development. These programs often include exercises that involve the chest, back, shoulders, arms, legs, and core.

For example, a weight-training program might include exercises like bench press (chest), rows (back), shoulder press (shoulders), bicep curls (arms), squats (legs), and planks (core).

Learn more about Well-designed weight-training programs here:

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What does the photoelectric effect prove?

Answers

The photoelectric effect is the process of producing electrons when light shines upon a certain material. The photoelectric effect proves that light is made up of particles or waves which means light has a wave-particle dual nature. Such nature is also present in electrons.

Advantages of using low energy appliances

Answers

Using low energy appliances can save you a lot of money. The more energy you use the more expensive it can get. Also it is better for the environment if you use the least energy possible. We don't want to be wasting so use less energy. More energy used, more harm it can do on the environment.

um carro com uma velocidade de 80 km\h passa pelo km 240 de uma rodovia as 7:30. a que horas este carro chegara a proxima cidade, sabendo-se que a mesma esta situada no km 300 dessa rodovia?

Answers

From km 240 to km 300 there are 60 km.

The time to travel 60 km at 80km/h is t = d/V = 60km / 80 km/h = 3/4 h.

That is 45 minutes. Then the car will arrive at 7:30 + 45 min = 8:15.

Other Questions

Which of these follows from Newton's laws about the energy of a moving object? A)The total mechanical energy of an object is always constant. B)The kinetic energy of an object remains the same if friction is absent. C)The mechanical energy remains the same if there are only conservative forces acting. D)The total of all forms of energy is always constant.

If an athlete expends 3480. kJ/h, how long does she have to play to work off 1.00 lb of body fat? Note that the nutritional calorie (Calorie) is equivalent to 1 kcal, and one pound of body fat is equivalent to about 4.10 × 103 Calories.

What is the KE of a bird, mass 40g flying at 23m/s?

Which of the following monitors both vertical and horizontal movements along a fault? a. seismograph b. GPS satellite systemc. Richter scale d. Mercalli Scale