A rock weighs 2.25 Newtons when suspended in air. In water, it appears to weigh only 1.8 Newtons. Why?
There is a buoyant force acting vertically upwards on the rock.
The most likely scenario was that it was hung on a Newton meter or similar whilst being fully/partially submerged in water.
But let's first consider the method of determining the weight of the rock in air with a Newton meter. There would be two vertical forces acting on the rock: tension,
In the case of full/partial submersion there would be three vertical forces acting on the rock: tension,
If you would like to know how to calculate the buoyant force see the answer to this question: https://tutor.hix.ai
By signing up, you agree to our Terms of Service and Privacy Policy
The apparent weight reduction in water is due to buoyancy, as the water exerts an upward force equal to the weight of the water displaced by the rock.
By signing up, you agree to our Terms of Service and Privacy Policy
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- The gas inside of a container exerts #9 Pa# of pressure and is at a temperature of #320 ^o K#. If the pressure in the container changes to #32 Pa# with no change in the container's volume, what is the new temperature of the gas?
- A container has a volume of #12 L# and holds #16 mol# of gas. If the container is expanded such that its new volume is #27 L#, how many moles of gas must be injected into the container to maintain a constant temperature and pressure?
- If #15 L# of a gas at room temperature exerts a pressure of #5 kPa# on its container, what pressure will the gas exert if the container's volume changes to #3 L#?
- If #32 L# of a gas at room temperature exerts a pressure of #64 kPa# on its container, what pressure will the gas exert if the container's volume changes to #16 L#?
- The gas inside of a container exerts #18 Pa# of pressure and is at a temperature of #450 ^o K#. If the pressure in the container changes to #25 Pa# with no change in the container's volume, what is the new temperature of the gas?

- 98% accuracy study help
- Covers math, physics, chemistry, biology, and more
- Step-by-step, in-depth guides
- Readily available 24/7