kinetic theory of matter 是什么

SEIKO 精工表
正面：SEIKO
KINETIC
TITANIUM
100M
背面：SEIKO
790388
WATER RESISTANT 10BAR TITANIUM
MOVEMENT JAPAN 5M62-DAMD A4

英语翻译
Use the kinetic molecular theory to explain how thermal eneergy was transferred along the metal bars.

英语翻译
The rollercoaster
Potential andkinetic energy
Observing themotion of a roller coaster car
Measuring thespeed of the roller coaster car

英语翻译
Expression of hormone receptors and cell kinetic-related molecules
during hormone therapy.In initial biopsy specimens,diffusely
strong immunoreactivity for ER and PR and a heterogeneous or
sporadic distribution of immunopositive cells for Ki-67,p21
and p27 were found for most tumors.During hormone therapy,
reduction or loss of PR and Ki-67 immunoreactivity was evident
in endometrial carcinomas,in contrast to increased p27
and no alteration in ER or p21 immunoreactivity (Fig.1).There
were significant associations of TE grading with PR,Ki-67,
and p27 LIs (Fig.5).Similar findings were also noted in atypical
hyperplasias (data not shown).
Correlations among β-catenin,hormone receptors and cell kinetic-related
molecules during hormone therapy.As shown in Table 4,the
N-LI values for β-catenin,as well as the gene mutation status
(data not shown),did not correlate with any of the other parameters
investigated,with the exception of the hormone receptor
status in the atypical hyperplasia category.
PR,but not ER,LI values were positively correlated with Ki-
67 and inversely with p27 LIs in both carcinomas and atypical
hyperplasias.Significant correlations for LIs between Ki-67
and either p21 or p27 were also noted.
Effects of progesterone on endometrial carcinoma cell lines.PCRdirect
sequence assays demonstrated an identical exon 3 mutation
of the β-catenin gene with mRNA and genomic DNA samples
from HEC265,featuring a GAC to GTC (Asp to Val)change at codon 32,in contrast to no mutation in Ishikawa
(data not shown).Immunofluorescence findings also showed
more frequent nuclear β-catenin stainings in HEC265,but not
Ishikawa (Fig.6A).
Upon MPA treatment,no apparent morphological changes
were observed in HEC265 and Ishikawa under phase-contrast
microscopy.Western blot assays revealed that lysates obtained
from total cell or membrane/nuclear fractions did not exhibit
any significant changes in β-catenin levels (data not shown).
The cytoplasmic protein level,however,was increased significantly
during MPA treatment in HEC265,together with downregulation
of PR,while there was no apparent change in GSK-
3β expression.In Ishikawa,PR expression levels were also suppressed
by MPA treatment,but the effect was relatively minor
(Fig.6B).No apparent induction of nuclear β-catenin accumulation
was evident in HEC265 and Ishikawa cells (data not
shown).In addition,β-catenin transcriptional functions as assessed
with TCF-responsive luciferase reporter constructs were
not observed in either cell line before or after MPA treatment
(data not shown).

An ib physics problem about kinetic energy and momentum!
Show than in an elastic,head-on collision of a particle of mass m with a stationary particle of mass M is (4mM)/(m+M)^2.That's the question.

describe the difference between potential energy and kinetic energy(use examples)

什么物理实验,目的,原理
Static and Kinetic Friction
If you try to slide a heavy box resting on the floor,you may find it difficult to get the box moving.Static friction is the force that is acting against the box.If you apply a light horizontal push that does not move the box,the static friction force is also small and directly opposite to your push.If you push harder,the friction force increases to match the magnitude of your push.There is a limit to the magnitude of static friction,so eventually you may be able to apply a force larger than the maximum static force,and the box will move.The maximum static friction force is sometimes referred to as starting friction.We model static friction,F­­static,with the inequality Fstatic m­s N where m­s is the coefficient of static friction and N the normal force exerted by a surface on the object.The normal force is defined as the perpendicular component of the force exerted by the surface.In this case,the normal force is equal to the weight of the object.

物理SAT一道
If value of an object is tripled,its kinetic energy is___ times its original value.
value在这里指什么?

一道SAT2
In the kinetic theory of gases,collisions between gas particles and the walls of the container are consider ed elastic.BECAUSE gas molecules are consider pointlike,volumeless particles with no intermolecular forces and in constant,random motion.

two boxes,m1=1.0kg with a coefficient of kinetic friction of 0.10,and m2=2.0kg with a coefficient of 0.20,are placed on a plane inclined at Θ=30.what acceletation does each box experience?If a taut string is connected to the boxes,with m2 initially farther down the slope,what is the acceleration of each box?If the initial configuration is reversed with m1 starting lower with a taut string,what is the acceleration of each box?

the kinetic energy is proportional to 1/r 2 e , whereas the Coulomb energy scales as 1/re
这句话怎么翻译 其实就是搞不懂 scale as 怎么翻译,

What is Kinetic chain length Please answer the question in English .