T = W - FB where T is the weightof the Al and FB buoyant force due to thealcohol T = ρAl V g - ρE V g =(ρAl - ρE) V g =(ρAl - ρE) * 10E-4 *9.8 converting the volume to m3

Using 2700 for the density of Al and 790 for the density ofethyl alcohol

T = 1910 * 10E-4 * 9.8 = 1.87 N

A wood block with a density of 700 floats in water.
What is the distance from the top of the block to the water if the water is fresh? (a) density of fresh water is ρ_water = 1000 kg/m³ ΣF = 0
- (ρ_wood)g(V_wood) + (ρ_water)g(v_wood) = 0 (v_wood)/(V_wood) = (ρ_wood)/(ρ_water) (10 * 10 * h)/(10 * 10 * 10) = (700)/(1000) h = 7 cm the distance from the top of the block to the water is 10 - 7 = 3 cm (b) density of seawater is ρ_sea = 1030 kg/m³

(v_wood)/(V_wood) = (ρ_wood)/(ρ_sea)
(10 * 10 * h')/(10 * 10 * 10) = (700)/(1030)
h' = 6.79611 cm the distance from the top of the block to the water is 10 - 6.79611 = 3.20389 cm

The container shown in the figure is filled with oil. It is open to the atmosphere on the left. By the known formula,
presure = P = h dg
h is the level of height of the water column
d is the density of the oil
g is the acceleration due to gravity
(a) presure at A : P_A = h d g = (0.5m -0m ) (900 kg/m^3)(9.8m/s^2)= 4410 Pa (b) presure between B and A = P_B - P_A = hdg = (0.5 m - 0 m )(900)(9.8)= 4410 Pa

(c) presure betwewn C and A = P_C - P_A = hdg = (0.5 m - 0 m )(900)(9.8)= 4410 Pa

What is the gas pressure inside the box shown in the figure? Height difference between gas and mercury h = 16 cm –6 cm = 10 cm = 0.1 m P = Po + Dgh Where Po= atmospheric pressure = 1 atm = 101.3 * 10 ^ 3Pa D = mercury = 13600 kg / m^ 3Plug the values weget P = ( 101.3 * 10^ 3 Pa) + (13328 Pa) = 114628 Pa (101325 Pa - 13328 Pa)=8.8*10^4 A 1.2-m-diameter vat of liquid is 2.4 deep. The pressure at the bottom of the vat is1.2 . What is the...

...HYDROSTATIC FORCE (EXPERIMENT 1)
INTRODUCTION
The determination of force which are exerted by liquid which are at rest on surface immersed in liquids. From the study by hydrostatic, the following principles have been established :
a) There are no shear stress present when the fluid is not in motion.
b) The pressure exerted by a fluid under hydrostatic conditions. This pressure acts perpendicular to an immersed surface.
c) Hydrostatic pressure...

...Definition of Force
A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces onlyexist as a result of an interaction.
Velocity, Acceleration, Momentum, and Impulse
Velocity, in physics, is a...

...Force & Motion
Isaac Newton – English physicist & mathematician.
Newton’s First Law of Motion(Law of Inertia):
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalance force.
An object at rest tends to remain at rest. An object in motion tends to move at a constant speed in a straight line unless acted upon by an unbalanced external...

...IB PHYSICS HL
Lab: Centripetal Force
BACKGROUND/PURPOSE:
*In this section of your lab write-up, be sure to include all equations and
background information
-For motion along a straight line, a constant net force F acting on a body of mass m produces a constant acceleration a, related to the force through Newton's law:
F = ma
-When the same object is moving in a circle at a constant speed, the acceleration of the object is given by the...

...For other uses, see Force (disambiguation).
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See also: Forcing (disambiguation)
ForceForce examples.svg
Forces are also described as a push or pull on an object. They can be due to phenomena such as gravity, magnetism, or anything that might cause a mass to accelerate.
Common symbol(s): F, F
in SI base quantities: 1 kg·m/s2
SI unit: newton
Derivations from other quantities: F = m a
Classical mechanics...

...crate (80 kg) is hung in an elevator by a cord rated to withstand a tension of 1200 N. The elevator starts at rest and begins moving upwards until the cord holding the crate breaks. What was the acceleration of the elevator when the cord broke? Assume g = 10 m/s2
Top of Form
(T1R + W1E)/ mass |
Bottom of Form
Block 1 (4 kg) is located on the surface of a table. A hand pushes horizontally to the right on block 1 with a normal force of 16 N.
On a sheet of...

...Surface Tension Properties of Liquids
Introduction
The purpose of this experiment is to measure and record the surface tension of water and other aqueous solutions using capillary rise method techniques and practicing lab safety. In this laboratory the surface tension of water depends on the concentration of the following solutes; NaCl, acetone, and sodium dodecyl sulfate (SDS). Intermolecular interactions as well as other phases (solid, or air)...

...questions: force and motion I problem 1 The figure below is an overhead view of a 12 kg tire that is to be pulled by three ropes. One force (Fl, with magnitude 50 N) is indicated. Orient the other two forces F2 and F3 so that the magnitude of the resulting acceleration of the tire is least, and find that magnitude if (a) F2 = 30N, F3= 20 N; (b) F2= 30 N, F3 = 10 N; and (c) F2 = F3 = 30 N.
problem 2 A weight-conscious penguin with a mass of 15.0 kg...