How does scaling relate to the fact that the heartbeat of large creatures is generally slower than the heartbeat of smaller creatures?

Q: If the original volume of a solid block of steel was 2.4 m^3, what is the change in volume after…

A: volume of block V = 2.4 m3 Increase of pressure ΔP = 3.4x106 N/m2 K for steel = 1.6×1011 N/m2

Q: Why is it that a larger piece of a metal that has a higher mass,has the same density as a smaller…

A: Given: Why is it that a larger piece of a metal that has a higher mass,has the same density as a…

Q: Name the type of intermolecular forces that exists between water molecules and give a reason for the…

A: Force of  interaction among molecules  is called intermolecular force . Water molecule is polar ,…

Q: Nourishment is obtained from food through the inner surface area of the intestines. Why is it that a…

A: Food is digested, and nourishment is obtained from the internal surface area of the intestine. A…

Q: Which is more elastic steel or rubber? Why?

A: By this definition, steel is more elastic than rubber because steel comes back to its original shape…

Q: Rank the volume of air in the glass, from greatest to least, when it is held (a) near the surface…

A: Given:The volume of air in glass is varying.

Q: Why do we say a blob of putty is inelastic?

A: A blob of putty does not return to its original shape when deformed. That is it does not retain its…

Q: What happens to the volume of the loaf of bread that is squeezed ? The mass? The density?

A: When the loaf of bread is squeezed, its volume decreases. Because its shape is changed by squeezing…

Q: The value of surface tension is more at O 50 oC O 80 oF O 103 oF O 300 oC O No correct answer

A: Surface tension is due to cohesive forces present on the boundary of a liquid .

Q: Why does your hair stand up when you go down a slide?

A: The hair stand up on going down the slide because of static electricity. On going down the slide,…

Q: Why do you suppose that airplane windows are smaller than bus windows?

A:

Q: Write copper, steel, rubber and glass in the increasing order of their elasticity.

A: elasticity of an object or body is defined as the ability to restore its original form after it is…

Q: How do you think air lessens your speed rate when you do a locomotor movement, such as running? And,…

A: The question is regarding the effects of air resistance on moving bodies. A drag force is a force…

Q: The vertical motion of the ship up and down caused by seawater is known as: Yawning Pitching Heaving…

A: The vertical motion of a ship up and down caused by sea water

Q: Ex: Delermine he horinndal velscity VA f afennes ball@A so that it gust olars the net PB. Alsondin)…

A:

Q: Why should I pick a compression spring ping pong ball launcher over any other ping pong ball…

A: A compression spring ping pong ball launcher is just like a spring mass system. The force exerted by…

Q: The photo shows physics instructor Marshall Ellenstein walking barefoot on broken glass bottles in…

A:

Q: A glass Dropped from the floor is more likely to break if the floor is concrete than if it is wood?…

A: To answer the question, we will use the concept of momentum and force.

Q: Which is more elastic? O rubber string O steel string

A:

Q: Does a dieting person more accurately lose mass or lose weight?

A: A dieting person is losing mass (the amount of matter that composes the person) losing mass is more…

Q: By how much does the density of air increase when it is compressed to half its volume?

A: Formula for the density is:

Q: In a water pistol, a piston drives water through a larger tube of area A, into a smaller tube of…

A: The speed of the plunger, v=r22×vnozzler12=1.10×10-3 m212.9 m/s1.40×10-2 m2=0.0796 m/s

Q: Why do gymnasts use floor mats that are very thick?

A: The gymnasts use floor mats that are very thick mats, since the thick mat having good amount of…

Q: Would a bottle of helium gas weigh more or less than an identical bottle filled with air at the same…

A:

Q: When you place an egg in water, it sinks. If you start adding salt to the water, after some time the…

A: Egg place in water

Q: What is kinematic viscosity?

A: Kinematic viscosity is defined as a measure of flow of a fluid’s internal resistance under…

Q: Why are you more easily able to sink to the bottom of the swimming pool when you expel as much air…

A: When you inhale air into your lungs, you are able to float because air is lighter than water.

Q: Distinguish between tension and compression?

A: The main difference between tension and compression is listed below.

Q: When you are swimming what can you notice about your body weights?

A: To explain : the body weight experienced by the swimmer while swimming

Q: Why were so many vertical columns needed to support the roofs of stone buildings?

A: Stones were the only raw material for construction in ancient Egypt and Greece. But as stones are…

Q: Why doesn’t a hummingbird soar like an eagle and an eagle flap its wings like a hummingbird?

A: The wings size of a hummingbird is smaller than the wing size of an eagle, so hummingbird can flap…

Q: Water is more elastic than air. Why?

A: The object with greater bulk modulus of rigidity is more elastic. Bulk modulus of elasticity is…

Q: People can snorkel down to a depth of roughly one meter. This means that the additional pressure on…

A: The depth is, d=1 m The density of water is, ρ=1000 kg/m3

Q: Why do airplanes extend wing flaps that increase the area and the angle of attack of the wing during…

A:

Q: Both a gorilla and a mouse mistakenly run off the edge of the same high cliff. How does scaling aid…

A: The mouse has a large surface area per unit body weight. Hence while falling, the mouse faces more…

Q: Which is heavier 50kgs sack of rice or 110lbs sack of rice?

A: Write the given values. m1=50 kgm2=110 lb

Q: Why gases have two elasticities?

A: Gases have high compressibility. Due to this, gases possess volume elasticity. The magnitude of the…

Q: If an axe head is a wedge, are scissors a pair of wedges? why or why not?

A:

Q: What are some of the physical benefits of passing in basketball? How passing in basketball helps…

A: What are some of the physical benefits of passing in basketball?How passing in basketball helps you…

Q: Why do people that runa marathon carbo load the night before the race?

A: Here we have to tell that what is the reason that people run a marathon tkae carbohydrates load the…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!