Less force is required to poke through an eggshell from the _____. A. outside in B. Force is the same in both directions. C. inside out
i think its C
@zaphodplaysitsafe
yes its inside out. thats because of the curvature of the shell.. thats why its easier for the hatchling to get out.
A molecule has _____. A. energy B. mass C. structure D. all of the above E. none of the above
its D right?
yes
If the mass of an object were to double while its volume remained the same, its density would _____. A. double B. halve C. stay the same
Its A
@zaphodplaysitsafe
yes
Steel is used in construction girders because it is an excellent _____ material. A. inelastic B. elastic C. neither A or B—elasticity does not matter in construction girders
is it C?
@zaphodplaysitsafe
are you sure
B sorry
elastic
yes material should be elastic to be used in construction
Which has more density, a loaf of bread just after it comes out of the oven or the same loaf that has been squeezed into a small volume? A. The squeezed loaf B. The fresh loaf C. They both have the same density.
A
A why?
because the fresh loaf has more volume..it is swolled up because of the air filled up in it
would nt it be C
no. density = Mass/ Volume. Mass is same in both cases. but Volume is reduced in squeezed loaf
Two equal-sized buckets are filled to the top with water. One of the buckets has a piece of wood floating in it, making its total weight _____. A. more than the weight of the other bucket B. equal to the weight of the other bucket C. less than the weight of the other bucket
is it B or C
B
If a weighted, air-filled balloon sinks in a lake, it will _____. A. be buoyed up with constant force while sinking B. probably sink to the bottom and probably rise later C. sink until it reaches equilibrium and then remain at constant depth D. always sink to the bottom E. none of the above
@zaphodplaysitsafe
i think its A
its C
can t it be D
not really. depending on the weight attached, it can come to equilibrium at a certain depth
now what's your point of view
it was D Zapho
I'm giving it a rethink :)
yes, you are right, I should have read the question more carefully, the question says the baloon is already sinking, which means the weight of displaced liquid for that baloon's volume has already been not able to support the total weight of the baloon. so nothing can stop it from sinking
Melting snow A. neither warms nor cools the surrounding air. B. warms the surrounding air. C. cools the surrounding air.
is it c
sorry it cools
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