Physics

A long straight wire is carrying a current of 2.4 A in a region where a uniform magnetic field is ...

A long straight wire is carrying a current of 2.4 A in a region where a uniform magnetic field is ...

[html]A long straight wire is carrying a current of 2.4 A in a region where a uniform magnetic field is perpendicular to the wire. If the magnetic field is 0.52 mT, what is the magnitude of the force on 3.0 m of the wire?

▸ 1.2 × 10−3

Merlin891   7   1 Reply

moqamoqa

Find the equation x=at2 + b that fits the following data.

Find the equation x=at2 + b that fits the following data.

[html]Find the equation x=at2 + b that fits the following data.

mlee52381   11   1 Reply

12Jfiscus

Within a given system, the internal forces

Within a given system, the internal forces

[html]Within a given system, the internal forces

▸ are always balanced by the external forces.

▸ all add to zero.

▸ are only determined by subtracting the external forces from the net force on the system.

▸ determin

jadinh   11   1 Reply

jp50

A 10 kg sphere with a 25.0 cm radius has a moment of inertia of 2/5 MR2. If a torque of 2.0 Nm is ...

A 10 kg sphere with a 25.0 cm radius has a moment of inertia of 2/5 MR2. If a torque of 2.0 Nm is ...

[html]A 10 kg sphere with a 25.0 cm radius has a moment of inertia of 2/5 MR2. If a torque of 2.0 N•m is applied to the object, the angular acceleration is

▸ 1.0 rad/s2.

▸ 2.0 rad/s2.

▸ 4.0

AsadQ1   11   1 Reply

egidrarc

A cable is 5.00 m long and has a diameter of 1.50 mm. The elastic modulus of the cable is 2.50 1010 ...

A cable is 5.00 m long and has a diameter of 1.50 mm. The elastic modulus of the cable is 2.50 1010 ...

[html]A cable is 5.00 m long and has a diameter of 1.50 mm. The elastic modulus of the cable is 2.50 × 1010 N/m2. A force is applied to the end of the cable and the cable stretches by 3.00 mm. What is the applied force?

marcsleiman   11   1 Reply

CJWVail2

A flat conductor of thickness 0.500 mm is placed in a magnetic field of 0.200 T perpendicular to the ...

A flat conductor of thickness 0.500 mm is placed in a magnetic field of 0.200 T perpendicular to the ...

[html] A flat conductor of thickness 0.500 mm is placed in a magnetic field of 0.200 T perpendicular to the flat surface. If there are 8.00 × 1024 charge carriers (i.e., electrons) per m3, what is the Hall voltage generated w

dietdrpepper   11   1 Reply

wukong81

A long straight wire is carrying a current of 2.4 A in a region with a uniform magnetic field. If ...

A long straight wire is carrying a current of 2.4 A in a region with a uniform magnetic field. If ...

[html]A long straight wire is carrying a current of 2.4 A in a region with a uniform magnetic field. If the magnetic field is 0.52 mT and makes an angle of 60° with the wire, what is the magnitude of the force on 3.0 m of the wire?

▸ 3.2 N

lotusflwr   11   1 Reply

julie5

Estimate the surface area of an adult humans head.

Estimate the surface area of an adult humans head.

Estimate the surface area of an adult human’s head.

▸ 0.01 m2

▸ 0.5 m2

▸ 1.0 m2

▸ 0.1 m2

shopaka12   12   1 Reply

maogin

An object travels 7.5 m/s toward the west. Under the influence of a constant net force of 5.2 kN, ...

An object travels 7.5 m/s toward the west. Under the influence of a constant net force of 5.2 kN, ...

[html]An object travels 7.5 m/s toward the west. Under the influence of a constant net force of 5.2 kN, after 4.3 s, it is travelling 2.5 m/s toward the east. What is its mass?

▸ 2200 kg

▸ 4500 kg

▸ 6000 kg

▸ 12000

nyah95   12   1 Reply

crazyali16

The specific heat of ice is 2.10 kJ/kg C, the heat of fusion for ice at 0 C is 333.7 kJ/kg, the ...

The specific heat of ice is 2.10 kJ/kg C, the heat of fusion for ice at 0 C is 333.7 kJ/kg, the ...

[html]The specific heat of ice is 2.10 kJ/kg °C, the heat of fusion for ice at 0 °C is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg °C, the heat of vaporization of water at 100 °C is 2,256 kJ/kg, and the specific heat of steam is 2.020 kJ/k

cacerami   12   1 Reply

rpascua

To use 100 Calories of energy, how high would an 80.0 kg person have to climb?

To use 100 Calories of energy, how high would an 80.0 kg person have to climb?

To use 100 Calories of energy, how high would an 80.0 kg person have to climb?

▸ 104 m

▸ 298 m

▸ 323 m

▸ 486 m

▸ 534 m

johnnyappleseed   12   1 Reply

damien03

A mass spectrometer splits a beam of 10B and 11B singly charged ions having the same velocity by ...

A mass spectrometer splits a beam of 10B and 11B singly charged ions having the same velocity by ...

[html]A mass spectrometer splits a beam of 10B and 11B singly charged ions having the same velocity by passing the beam through a uniform magnetic field. If the radius of the path for the 10B ions is 12.0 cm, what

sam3359   12   1 Reply

kuteeme

A proton and electron, travelling with the same velocity in the +x direction, enter separate ...

A proton and electron, travelling with the same velocity in the +x direction, enter separate ...

[html]A proton and electron, travelling with the same velocity in the +x direction, enter separate regions, each with a uniform magnetic field in the ±y direction (magnitude Bp for the proton, Be for the electron). They each

AL0354335   12   1 Reply

marcospolos

The unit of resistance is named after

The unit of resistance is named after

The unit of resistance is named after
A) Isaac Newton.
B) Benjamin Franklin.
C) Georg Simon Ohm.
D) Micheal Faraday.
E) Charles Coulomb.

ritvikc   13   1 Reply

CatHan

A lump of energy associated with light is called a

A lump of energy associated with light is called a

A lump of energy associated with light is called a
A) quantum.
B) photon.
C) both of these
D) neither of these

Petro279   13   1 Reply

Charline091486

Find the equation v2 = ah + b that fits the following data.

Find the equation v2 = ah + b that fits the following data.

[html]Find the equation v2 = ah + b that fits the following data.

Godty   13   1 Reply

crusherpsg

Which of the following is not an SI base unit?

Which of the following is not an SI base unit?

Which of the following is not an SI base unit?

▸ kelvin

▸ kilogram

▸ newton

▸ second

▸ meter

ken80   13   1 Reply

toastercat

You find a coin resting on your physics book cover and notice that when you open the cover, the coin ...

You find a coin resting on your physics book cover and notice that when you open the cover, the coin ...

[html]You find a coin resting on your physics book cover and notice that when you open the cover, the coin slips exactly when the cover reaches 25 degrees above the horizontal. What is the coefficient of static friction between the coin and book c

theroyalty   13   1 Reply

ramos1992

An object starts from rest and travels in a straight line with an acceleration of 2.0 m/s2 for 3.0 ...

An object starts from rest and travels in a straight line with an acceleration of 2.0 m/s2 for 3.0 ...

[html]An object starts from rest and travels in a straight line with an acceleration of 2.0 m/s2 for 3.0 seconds. It then reduces its acceleration to 1.0 m/s2 for 5.0 additional seconds. The magnitude of the velocity at the e

tara.harris.9   13   1 Reply

djbo89

A 3.00 kg mass and a 4.00 kg mass are dropped from a great height simultaneously. What is the ...

A 3.00 kg mass and a 4.00 kg mass are dropped from a great height simultaneously. What is the ...

[html]A 3.00 kg mass and a 4.00 kg mass are dropped from a great height simultaneously. What is the magnitude of the velocity of the center of mass at t = 10 s (ignore air resistance)?

▸ 9.8 m/s

▸ 7.0 m/s

▸ 70 m/s

▸

meghan.binge   13   1 Reply

Nfernandez1991

A 3.00 kg mass is located at x = 2.0 cm and y = 0.0 cm. A 3.00 kg mass is located at x = 0.0 cm and ...

A 3.00 kg mass is located at x = 2.0 cm and y = 0.0 cm. A 3.00 kg mass is located at x = 0.0 cm and ...

[html]A 3.00 kg mass is located at x = 2.0 cm and y = 0.0 cm. A 3.00 kg mass is located at x = 0.0 cm and y = 2.0 cm. A 4.00 kg mass is located at x = 3.0 cm and y = −3.0 cm. Where is the location of the center of mass?

▸ (1.8 cm, −0.60 cm

ahyukj   13   1 Reply

harrison5692

The units of momentum are

The units of momentum are

The units of momentum are

▸ ML/T.

▸ M/T.

▸ L/T2.

▸ ML/T2.

▸ ML2/T2.

britt138   13   1 Reply

someonespecial

A food Calorie is a kilocalorie in SI units. What would be the speed of a 1,000 kg car traveling ...

A food Calorie is a kilocalorie in SI units. What would be the speed of a 1,000 kg car traveling ...

[html]A food Calorie is a kilocalorie in SI units. What would be the speed of a 1,000 kg car traveling such that its kinetic energy is equal to the energy contained in one 250-Calorie jelly doughnut?

▸ 46 m/s

▸ 65 m/s

▸ 32

harry32   13   1 Reply

wukong81

A thin metallic spherical shell of radius 50 cm has a total charge of 4.0 C placed on it. At the ...

A thin metallic spherical shell of radius 50 cm has a total charge of 4.0 C placed on it. At the ...

[html]A thin metallic spherical shell of radius 50 cm has a total charge of 4.0 µC placed on it. At the center of the shell is placed a point charge of 2.00 µC. What is the electric field at a distance of 90 cm from the center of the spherical she

bmh12e   13   1 Reply

juniorp

The north end of a bar magnet is pushed downward toward a wire loop in the plane of the paper. In ...

The north end of a bar magnet is pushed downward toward a wire loop in the plane of the paper. In ...

[html] The north end of a bar magnet is pushed downward toward a wire loop in the plane of the paper. In which direction is the induced current, and which way is the induced magnetic field?

▸  clockwise, into the paper

▸  clockwi

becky28   13   1 Reply

denitra31

A laser beam is directed through a grating and a first-order maximum is produced at 17. What is the ...

A laser beam is directed through a grating and a first-order maximum is produced at 17. What is the ...

A laser beam is directed through a grating and a first-order maximum is produced at 17°. What is the highest order maximum that can be produced by this arrangement?

▸ 2

▸ 3

▸ 4

▸ 5

▸ 6

katerooshkie   13   1 Reply

TAE29

Linear momentum __________ conserved. (Fill in the blank)

Linear momentum __________ conserved. (Fill in the blank)

Linear momentum __________ conserved.
 Fill in the blank(s) with correct word


[Ques. 2] Angular momentum __________ conserved.
 Fill in the blank(s) with correct word


[b

Missmina01   14   3 Replies

logan27

Which of the following describes an electrode?

Which of the following describes an electrode?

Which of the following describes an electrode?
A) Any material that conducts electrons into a media where electrochemical reactions are taking place.
B) Any material that conducts electrons out of a media where electrochemical reactions are taking

damnitdiane   14   1 Reply

Fifagirl101

In general, a stream with a high discharge tends to have

In general, a stream with a high discharge tends to have

In general, a stream with a high discharge tends to have
A) increased laminar flow.
B) increased turbulent flow.
C) a high velocity.
D) a narrow stream channel.

ShanitaD220   14   3 Replies

Nisa

Find the equation x = at+b that fits the following data.

Find the equation x = at+b that fits the following data.

[html]Find the equation x = at+b that fits the following data.

rhialways659   14   1 Reply

voltayre

Which of the following is a reasonable estimate for the total surface area of all the seats in a ...

Which of the following is a reasonable estimate for the total surface area of all the seats in a ...

[html]Which of the following is a reasonable estimate for the total surface area of all the seats in a football stadium that seats 100,000 spectators? Consider only the horizontal portion of the seats (the part that people actually sit on).

▸

darkfire12   14   1 Reply

JulzMarie

If an object is located 20 m to the left of the origin at 1:00 PM, and later the object is located ...

If an object is located 20 m to the left of the origin at 1:00 PM, and later the object is located ...

[html]If an object is located 20 m to the left of the origin at 1:00 PM, and later the object is located 30 m to the right of the origin at 2:00 PM, then the displacement from 1:00 PM to 2:00 PM is

▸ 50 m to the right.

▸ 30 m to th

waterman7833   14   1 Reply

kaitmaw

A baseball is struck by a batter at an angle such that it reaches its maximum height at the location ...

A baseball is struck by a batter at an angle such that it reaches its maximum height at the location ...

[html]A baseball is struck by a batter at an angle such that it reaches its maximum height at the location of the pitcher—and just grazes the top of the pitcher’s head (at an elevation of 1.50 m above the launch point of the baseball). The pitcher

onetouch   14   1 Reply

cheezeh3ad

A ball bearing rolls along a smooth horizontal tabletop and crashes head-on into a second, ...

A ball bearing rolls along a smooth horizontal tabletop and crashes head-on into a second, ...

[html]A ball bearing rolls along a smooth horizontal tabletop and crashes head-on into a second, stationary ball bearing of half its mass. If both ball bearings roll in the x-direction only (either positive or negative) and the initially stationar

NNF1024   14   1 Reply

strawberry8971

A mass m1 is connected by a light string that passes over a pulley of mass M to a mass m2 sliding on ...

A mass m1 is connected by a light string that passes over a pulley of mass M to a mass m2 sliding on ...

[html]A mass m1 is connected by a light string that passes over a pulley of mass M to a mass m2 sliding on a frictionless horizontal surface as shown in the figure. There is no slippage between the string and the pulley. The

ahyukj   14   1 Reply

crazyali16

A cable has a strain of 2.0 10-3. If the unstretched length of the cable is 24.0 m, then the change ...

A cable has a strain of 2.0 10-3. If the unstretched length of the cable is 24.0 m, then the change ...

A cable has a strain of 2.0 × 10-3. If the unstretched length of the cable is 24.0 m, then the change in length of the cable is

▸ 35 mm.

▸ 48 mm.

▸ 52 mm.

▸ 59 mm.

▸ 67 mm.

Heybonita   14   1 Reply

kyuhalee1

A nail projects 40.0 mm horizontally outward from a wall. A 25.0 N coat is hung from the end of the ...

A nail projects 40.0 mm horizontally outward from a wall. A 25.0 N coat is hung from the end of the ...

[html]A nail projects 40.0 mm horizontally outward from a wall. A 25.0 N coat is hung from the end of the nail and the nail deflects downward by 2.50 × 10−6 m. The shear strain of the nail is

▸ 4.00 × 10−5.

▸

anymous   14   1 Reply

jennaforiero

The speed of sound in helium is 965 m/s. If the density of helium is 0.179 kg/m3, then what is the ...

The speed of sound in helium is 965 m/s. If the density of helium is 0.179 kg/m3, then what is the ...

[html]The speed of sound in helium is 965 m/s. If the density of helium is 0.179 kg/m3, then what is the bulk modulus of helium?

▸ 2.70 × 105 N/m2

▸ 2.40 × 105 N/m2

▸ 2

Yukinara   14   1 Reply

maneee1

A 1,500 W portable heater is needed to replace the heat lost through a circular window (radius 25 ...

A 1,500 W portable heater is needed to replace the heat lost through a circular window (radius 25 ...

[html]A 1,500 W portable heater is needed to replace the heat lost through a circular window (radius 25 cm) in the wall of a home. The window is made of a single pane of glass 0.30 cm thick. The thermal conductivity for the glass is 0.63 W/(m·K).

whitywhite11   14   1 Reply

kniemeier2

A 100 g glass container contains 250 g of water at 15.0 C. A 100 g piece of unknown material at 100 ...

A 100 g glass container contains 250 g of water at 15.0 C. A 100 g piece of unknown material at 100 ...

[html]A 100 g glass container contains 250 g of water at 15.0 °C. A 100 g piece of unknown material at 100 °C is added to the water in the container. The final temperature of the mixture is 19.0 °C. What is the specific heat of the unknown materia

frustelle   14   1 Reply

Ama1911