Gold alloys are _____.much harder than pure gold
do not last as long as pure gold
much more valuable than pure gold
much softer than pure gold

Answers

Answer 1

Answer: Much harder then pure gold.

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What is the hardest rock to break with a hammer

Answers

Bedrock might be the answer

A graduated cylinder is filled to an initial volume of 12.7 ml. A rock Is dropped into the graduated cylinder. The final volume of the graduated cylinder is 18.2ml. What is the Rocks volume in both ml and cm3? What method was used to determine this?

Answers

Answer:

V = 5.5 mL

Explanation:

The volume filled in the graduated cylinder is 12.7 mL

now when a stone is dropped into the cylinder then the volume of liquid is raised to final level of 18.2 mL

so as per the theory of given by Archimidies we can say that the volume of the object is exactly same as the volume displaced by the object

So here the volume displaced by the object is given as

$V_(displaced) = V_f - V_i$

$V_(displaced) = 18.2 mL - 12.7 mL$

$V_(displaced) = 5.5 mL$

so the volume of the object is given as

$V = V_(displaced)$

$V = 5.5 mL$

First of all, ml and cm^3 are equal. The volume of the rock is 5.5 ml. This is found by subtracting the volume of just the water from the combined volume of the rock and the water leaving you with just the volume of the rock. This is method is using water displacement.

What environmental effects are shared by all fossil fuels

Answers

fossil fuel can cause global warming and greenhouse effects on our earth

one main is climate change or global warming as you can call it

The mass of a football player who weighs 1250N

Answers

Ah hah ! That depends on where he weighs 1250N, because
weight depends not only on mass but also on the local gravity.
So the same mass can have different weights in different places,
and the same weight can indicate different mass in different places.

Weight = (mass) x (acceleration of gravity) .

Note: 1250N is almost exactly 281 pounds.

-- If he weighs 1250N on Mars, then his mass is 336.8 kg.

-- If he weighs 1250N on Earth, then his mass is 127.5 kg.

-- If he weighs 1250N on the Moon, then his mass is 770.2 kg.

The small piston in a hydraulic system has a cross-sectional area of 0.5 m2, and the large piston has an area of 3m3. What is the force exerted by the large piston if a force of 500 N is exerted on the small piston?

Answers

Considering the fluid as ideal, the pressure will spread throughout its volume. Thus,

$(F_1)/(A_1)= (F_2)/(A_2) \n F_2= (3* 500)/(0.5) \n \boxed {F_2=3000N}$

If you notice any mistake in my english, please let me know, because my english level is still low.

The for objects to ____changes in their motion is called