Physics

A 10.0-kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall and reaches to ...

A 10.0-kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall and reaches to ...

[html]A 10.0-kg uniform ladder that is 2.50 m long is placed against a smooth vertical wall and reaches to a height of 2.10 m, as shown in the figure. The base of the ladder rests on a r

Djkratos264   573   7 Replies

Kioko Cramer

A particular chemical reaction that produces hydrogen gas as a byproduct has an activation energy of ...

A particular chemical reaction that produces hydrogen gas as a byproduct has an activation energy of ...

[html]A particular chemical reaction that produces hydrogen gas as a byproduct has an activation energy of 19.2 × 10−20 J. If the reaction produces 0.15 × 10−3 mol H2/hr at room temperature (20°C), what is the rate

realgraverobb   49   2 Replies

Anonymous

Three blocks, connecting ropes, and a light frictionless pulley comprise a system, as ...

Three blocks, connecting ropes, and a light frictionless pulley comprise a system, as ...

[html]Figure 5.14

Jay.M   175   2 Replies

Anonymous

The figure shows a pV diagram for 2.9 g of ideal oxygen gas O2 in a sealed container. The ...

The figure shows a pV diagram for 2.9 g of ideal oxygen gas O2 in a sealed container. The ...

[html]The figure shows a pV diagram for 2.9 g of ideal oxygen gas O2 in a sealed container. The temperature of state 1 is 76° C, the atomic mass of the oxygen atom is

CaptainTrout   128   2 Replies

Anonymous

Point charges of equal magnitudes (25 nC) and opposite signs are placed on (diagonally) opposite ...

Point charges of equal magnitudes (25 nC) and opposite signs are placed on (diagonally) opposite ...

Point charges of equal magnitudes (25 nC) and opposite signs are placed on (diagonally) opposite corners of a 60-cm  80-cm rectangle. If point A is the corner of this rectangle nearest the positive charge and point B is located at the intersecti

bkm1   313   3 Replies

Anonymous

If Planck's constant were ten times smaller than it is, quantum effects would be

If Planck's constant were ten times smaller than it is, quantum effects would be

If Planck's constant were ten times smaller than it is, quantum effects would be
A) easier to detect.
B) more difficult to detect.
C) neither easier nor more difficult to detect.

einsteindude   433   3 Replies

mel!811

Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an axial ...

Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an axial ...

Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an axial spin rate 1/2 that of Earth. With g representing, as usual, the acceleration due to gravity on the surface of Earth, the acceleration due to gravity

GollumOfOz   589   4 Replies

Anonymous

Two long, straight, parallel conductors are 10 cm apart (see figure below). Conductor A has a ...

Two long, straight, parallel conductors are 10 cm apart (see figure below). Conductor A has a ...

Two long, straight, parallel conductors are 10 cm apart (see figure below).
Conductor A has a current i_A=2.0 A flowing out of the page, and conductor B has a current i_B=3.0 A flowing in the opposite direction (into the page). [10 marks]

abbyybba_   745   6 Replies

saleenaali

A 7.5-kg otter slides down a hill, starting from rest at the top. The sloping surface of the hill is ...

A 7.5-kg otter slides down a hill, starting from rest at the top. The sloping surface of the hill is ...

A 7.5-kg otter slides down a hill, starting from rest at the top. The sloping surface of the hill is 8.8 m long, and the top is 6.5 m above the base. If the speed of the otter at the bottom of the hill is 9.2 m/s, how much energy of the otter-Earth s

Pd96   1119   6 Replies

(27) Selim Demirhan

A red curling rock with a mass of 18.8 kg, travelling straight down a sheet of ice at 0.264 m/s, col

A red curling rock with a mass of 18.8 kg, travelling straight down a sheet of ice at 0.264 m/s, col

A red curling rock with a mass of 18.8 kg, travelling straight down a sheet of ice at 0.264 m/s, collides with a stationary blue curling rock of the same mass. After the contact, the blue rock moves at 0.132 m/s at an angle of 65°. Calculate the velo

nauticalpal   366   2 Replies

SwornFate

Kinematics problem set 2 question 55

Kinematics problem set 2 question 55

Assuming no air resistance, how long does it take for a penny to fall if it was thrown down with an initial velocity of 5.0m/s from the CN tower(553)? This is similar to another question that I asked but I don't really know how to do it.

S.v   60   2 Replies

S.v

Kinematics Problem set 2

Kinematics Problem set 2

Assuming no air resistance, how long does it take a penny to fall from the CN tower (553m)? Acceleration due to gravity is 9.8m/s^2

S.v   81   3 Replies

bio_man

Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole ...

Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole ...

Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.50 s and reaches the level of the top of the pole after a total elapsed time of 4.1 s. What was the speed of the ball at as it passed the top of

Pd96   266   3 Replies

bio_man

Who is credited with first speculating that matter is composed of tiny unseen units?

Who is credited with first speculating that matter is composed of tiny unseen units?

Who is credited with first speculating that matter is composed of tiny unseen units?

▸ Democritus

▸ Aristarchus

▸ Aristotle

▸ Newton

▸ Einstein

Melly767   65   1 Reply

frithne

Which of the fundamental interactions governs the following decay? ?

Which of the fundamental interactions governs the following decay? ?

[html]Which of the fundamental interactions governs the following decay?

SeaBass2013   56   1 Reply

birdnugget

Which of the fundamental interactions governs the following decay?

Which of the fundamental interactions governs the following decay?

[html]Which of the fundamental interactions governs the following decay?

hussainizzle   47   1 Reply

patriciakim08

Which of the following particles not considered to be elementary?

Which of the following particles not considered to be elementary?

Which of the following particles not considered to be elementary?

▸  the electron

▸  the electron antineutrino

▸  the neutron

▸  the muon

▸  the tau

fatsoulmh   50   1 Reply

olskee

Which of the following particles interact via the strong interaction?

Which of the following particles interact via the strong interaction?

Which of the following particles interact via the strong interaction?

▸ gravitons

▸ quarks

▸ leptons

▸ neutrinos

▸ photons

tls043   44   1 Reply

kpot15

Which of the following particles does not take part in mediating the weak interaction?

Which of the following particles does not take part in mediating the weak interaction?

[html]Which of the following particles does not take part in mediating the weak interaction?

▸  W+

▸ W−

▸ π0

▸  Z0

▸ All these choices a

punkybrewster   46   1 Reply

shadowblacw

Which of the following is not an abbreviation for a quark flavor?

Which of the following is not an abbreviation for a quark flavor?

Which of the following is not an abbreviation for a quark flavor?

▸ u

▸ s

▸ b

▸ t

▸ r

phoebe.lou   50   1 Reply

mmorris1537

Which of the following is not a color charge associated with the strong interaction?

Which of the following is not a color charge associated with the strong interaction?

Which of the following is not a color charge associated with the strong interaction?

▸  red

▸  blue

▸  yellow

▸  green

▸ All of these are color charges for the strong interaction.

ahyukj   59   1 Reply

benschmann

Which of the conservation laws listed below would definitely be violated in the following reaction? ...

Which of the conservation laws listed below would definitely be violated in the following reaction? ...

Which of the conservation laws listed below would definitely be violated in the following reaction?  π+ + p → p + π−?

▸  baryon number

▸ energy

▸ momentum

▸ charge

npdtan92   64   1 Reply

duankong-fei

Which of the answer choices below could be the unknown particle X in the following reaction?

Which of the answer choices below could be the unknown particle X in the following reaction?

[html]Which of the answer choices below could be the unknown particle X in the following reaction?

reync89   67   1 Reply

lpants

Which force does not diminish with increasing distance?

Which force does not diminish with increasing distance?

[html]Which force does not diminish with increasing distance?

▸ the force between quarks

▸ the force between opposite charges

▸ the force between masses

▸  the force between magnets

▸  None of these choices

Hareplity   47   1 Reply

jay2013

The weak interaction is mediated by

The weak interaction is mediated by

The weak interaction is mediated by

▸ gluon.

▸ photon.

▸ mesons.

▸ W+, W−, Z0.

▸ leptons.

biokam   55   1 Reply

satish1015

The top quark has a mass of about 173 GeV/c2. What is its mass in atomic mass units?

The top quark has a mass of about 173 GeV/c2. What is its mass in atomic mass units?

The top quark has a mass of about 173 GeV/c2. What is its mass in atomic mass units?

▸ 175 u

▸ 186 u

▸ 163 u

▸ 58 u

▸ 19 u

minaebied   52   1 Reply

gagan17

The standard model does not include which interaction?

The standard model does not include which interaction?

The standard model does not include which interaction?

▸ electromagnetic

▸ gravitational

▸ weak

▸ strong

▸ It includes all of these choices.

atomicyoyo   47   1 Reply

starikovs

The quark structure of the neutron is

The quark structure of the neutron is

[html]The quark structure of the neutron is

▸  uub

▸  udb

▸  udd

▸  uds

▸

drdoombot   50   1 Reply

john august t

The proton has the quark structure

The proton has the quark structure

[html]The proton has the quark structure

▸ uud

▸ udd

▸

mrtrombley92   51   1 Reply

Gimor1220

The neutron decays into a proton, electron, and an electron antineutrino. Into what does the ...

The neutron decays into a proton, electron, and an electron antineutrino. Into what does the ...

[html]The neutron decays into a proton, electron, and an electron antineutrino. Into what does the antineutron decay?

▸  a proton, positron, and electron antineutrino

▸  an antiproton, positron, and electron neutrino

▸  a

ken80   50   1 Reply

hamusa4

The neutrino does not

The neutrino does not

The neutrino does not

▸ have electric charge.

▸ interact with other particles.

▸ have momentum.

▸ have energy.

▸ have mass.

chief333   48   1 Reply

krissyc39

The neutral pion decays by 0 2. The mass of the neutral pion is 135 MeV/c2. What is the energy of ...

The neutral pion decays by 0 2. The mass of the neutral pion is 135 MeV/c2. What is the energy of ...

[html]The neutral pion decays by π0→ 2ϒ. The mass of the neutral pion is 135 MeV/c2. What is the energy of each of the photons if the pion is at rest when it decays?

▸  270 MeV

▸  135 MeV

▸

onlineerica   56   1 Reply

callisonr

The most recent unification of fundamental forces included which interactions?

The most recent unification of fundamental forces included which interactions?

[html]The most recent unification of fundamental forces included which interactions?

▸ electromagnetic and gravitational

▸ electromagnetic and strong

▸ electromagnetic and weak

▸ strong and weak

▸ gravitatio

NinjaRick   49   1 Reply

jwmaro

The meson having which of the following quark contents is electrically neutral?

The meson having which of the following quark contents is electrically neutral?

[html] The meson having which of the following quark contents is electrically neutral?

▸

tweb28   53   1 Reply

Hollywood1971

The meson having which of the following quark contents has electric charge e?

The meson having which of the following quark contents has electric charge e?

[html]The meson having which of the following quark contents has electric charge −e?

▸

mrtrombley92   46   1 Reply

john august t

The LHC is located at CERN in

The LHC is located at CERN in

The LHC is located at CERN in

▸  Germany and Poland.

▸  Switzerland and France.

▸  France and Belgium.

▸  the United States and Canada.

▸  Texas.

Lettucebereal   41   1 Reply

AdieMichelle

The exchange particles for the strong interaction are

The exchange particles for the strong interaction are

The exchange particles for the strong interaction are

▸  positrons

▸  quarks

▸  leptons

▸  gluons

▸  muons

teranine   54   1 Reply

awbradshaw

The exchange particle that mediates the strong interaction is the

The exchange particle that mediates the strong interaction is the

The exchange particle that mediates the strong interaction is the

▸ gluon.

▸ photon.

▸ graviton.

▸ neutrino.

jene277   44   1 Reply

hfrankos

The electron antineutrino is which of the following types of particle?

The electron antineutrino is which of the following types of particle?

The electron antineutrino is which of the following types of particle?

▸ meson

▸ baryon

▸ hadron

▸ lepton

▸ quark

jarzola   44   1 Reply

johnmilton

The baryon having which of the following quark contents is electrically neutral?

The baryon having which of the following quark contents is electrically neutral?

The baryon having which of the following quark contents is electrically neutral?

▸ dds

▸ bbc

▸ uud

▸ ucs

Trey4sho   47   1 Reply

Nfernandez1991