Physics

An object is 5.7 cm from a spherical concave mirror. If the image is 4.7 cm tall and 10 cm from the ...

An object is 5.7 cm from a spherical concave mirror. If the image is 4.7 cm tall and 10 cm from the ...

An object is 5.7 cm from a spherical concave mirror.  If the image is 4.7 cm tall and 10 cm from the mirror, how tall is the object?
A) 12 cm
B) 11 cm
C) 8.2 cm
D) 2.7 cm

Chery   503   3 Replies

Anonymous

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   1488   10 Replies

kristian corry

Physics II, Speed of Light

Physics II, Speed of Light

Astronaut Spud Nick is space-travelling from planet X to planet Y at a speed of 0.59 c. When he is precisely halfway between the planets, a distance of 1 light-hour from each in the planets' frame, nuclear devices are detonated. The explosions a

grace47   1112   3 Replies

Serendipity1az

A Geiger counter is like an electroscope that discharges whenever ions formed by a radioactive ...

A Geiger counter is like an electroscope that discharges whenever ions formed by a radioactive ...

A Geiger counter is like an electroscope that discharges whenever ions formed by a radioactive particle produce a conducting path. A typical Geiger counter consists of a thin conducting wire of radius 0.002 cm stretched along the axis of a conducting

life_skals   226   2 Replies

Anonymous

An object is attached to a hanging unstretched ideal and massless spring and slowly lowered to its ...

An object is attached to a hanging unstretched ideal and massless spring and slowly lowered to its ...

An object is attached to a hanging unstretched ideal and massless spring and slowly lowered to its equilibrium position, a distance of 6.4 cm below the starting point. If instead of having been lowered slowly the object was dropped from rest, how far

GollumOfOz   1178   4 Replies

Hailey 2

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_   1161   7 Replies

Anonymous

Acceleration has dimension [L/T2]. Use dimensional analysis to determine the ratio of accelerations ...

Acceleration has dimension [L/T2]. Use dimensional analysis to determine the ratio of accelerations ...

[html]Acceleration has dimension [L/T2]. Use dimensional analysis to determine the ratio of accelerations for car A to car B, if, everything else being equal, car A travels a given distance in half the time required by car B.

▸ 2

▸

bananas87   372   2 Replies

Anonymous

A 12.0 V battery has an internal resistance of 0.080 . If the battery supplies 100 A when connected ...

A 12.0 V battery has an internal resistance of 0.080 . If the battery supplies 100 A when connected ...

[html]A 12.0 V battery has an internal resistance of 0.080 Ω. If the battery supplies 100 A when connected to a starter motor, what is the resistance of the motor?

▸ 0.080 Ω

▸ 0.20 Ω

▸ 0.0012 Ω

▸ 0.040 Ω

▸ 0

Jimmyhighroller   534   3 Replies

studytime

A rocket is launched from the origin with an acceleration of 20.0 m/s2 at an angle of 30.0 degrees ...

A rocket is launched from the origin with an acceleration of 20.0 m/s2 at an angle of 30.0 degrees ...

[html]A rocket is launched from the origin with an acceleration of 20.0 m/s2 at an angle of 30.0 degrees above the horizontal. The launch acceleration lasts for 2.00 seconds at which time the fuel is exhausted. The rocket then falls wit

theferpectstudent   523   3 Replies

shichihenge7

A flat circular wire loop of area 0.25 m2 carries a current of 5.0 A. This coil lies on a ...

A flat circular wire loop of area 0.25 m2 carries a current of 5.0 A. This coil lies on a ...

A flat circular wire loop of area 0.25 m2 carries a current of 5.0 A.  This coil lies on a horizontal table with the current flowing in the counterclockwise direction when viewed from above.  At this point, Earth’s   field is 1.2 × 10-

Chery   1142   4 Replies

Anonymous

A ball of mass 6.0 kg is suspended by two wires from a horizontal arm, which is attached ...

A ball of mass 6.0 kg is suspended by two wires from a horizontal arm, which is attached ...

[html]Figure 6.1

luhhshortiee   709   4 Replies

Anonymous

A 480-kg car moving at 14.4 m/s hits from behind a 570-kg car moving at 13.3 m/s in the same ...

A 480-kg car moving at 14.4 m/s hits from behind a 570-kg car moving at 13.3 m/s in the same ...

A 480-kg car moving at 14.4 m/s hits from behind a 570-kg car moving at 13.3 m/s in the same direction. If the new speed of the heavier car is 14.0 m/s, what is the speed of the lighter car after the collision, assuming that any unbalanced forces on

Azure   880   5 Replies

Flamthr ????

The distance between the object to be viewed and the eyepiece of a compound microscope is 18.0 cm. ...

The distance between the object to be viewed and the eyepiece of a compound microscope is 18.0 cm. ...

The distance between the object to be viewed and the eyepiece of a compound microscope is 18.0 cm. The focal length of its objective lens is 0.80 cm and the eyepiece has a focal length of 2.3 cm. The near-point distance of the person using the micros

Chery   317   4 Replies

Anonymous

The distance between the object and the eyepiece of a compound microscope is 18.

The distance between the object and the eyepiece of a compound microscope is 18.

The distance between the object and the eyepiece of a compound microscope is 18.0 cm. The focal length of its objective lens is 0.80 cm and the eyepiece has a focal length of 2.3 cm. The near-point distance of the person using the microscope is 25.0

ppk   2127   2 Replies

Anonymous

An astronaut drops a marble on the surface of Mars and observes that it takes 1

An astronaut drops a marble on the surface of Mars and observes that it takes 1

An astronaut drops a marble on the surface of Mars and observes that it takes  1.02 s for the marble to fall 2.00 m. She also knows that the radius of Mars is 3.39 × 106 m and that G = 6.67 x 10-11 N•m2/kg2. From this information, she can conclu

ppk   2392   3 Replies

duddy

A car moving at 36 m/s passes a stationary police car whose siren has a frequency of 500 hz. What is ...

A car moving at 36 m/s passes a stationary police car whose siren has a frequency of 500 hz. What is ...

A car moving at 36 m/s passes a stationary police car whose siren has a frequency of 500 hz. What is the change in the frequency (in Hz) heard by an observer in the moving car as he passes the police car? (The speed of sound in air is 343 m/s.)

agilleland   196   3 Replies

Bboggie17

As shown in the figure, a 10.0 m long bar is attached by a frictionless hinge to a wall and held ...

As shown in the figure, a 10.0 m long bar is attached by a frictionless hinge to a wall and held ...

[html]As shown in the figure, a 10.0 m long bar is attached by a frictionless hinge to a wall and held horizontal by a light rope that makes an angle θ = 49° with the bar. The bar is uniform and weighs

Hef   992   6 Replies

Bob McFiggins

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s.

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s.

 
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 31 rad/s. The wheel is run at that angular velocity for  27 s and t

mikael   886   3 Replies

padre

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   645   4 Replies

Yeiso Sierra

Physics HW Completion of EXAMPLE

Physics HW Completion of EXAMPLE

Hello, Hoping all is well.

I kindly need your assistance in completing this physics example my teacher asked me to complete for HW. Its all one question. On Page 3-4, he wants us to fill in the blanks where it says [Non-sigfig] I've c

s.h_math   147   1 Reply

bio_man

Magnitude of acceleration and direction

Magnitude of acceleration and direction

The position of an object as a function of time is r=(3.2t+1.5 t2)^i+(1.7t−2.0 t2)j^m, where t
 is the time in seconds. Find the magnitude and direction of acceleration.

Anonymous   230   3 Replies

bio_man

Two point charges, Q1 = -4.0 C and Q2 = +2.0 C, are placed as shown. In Figure 17.14c, ...

Two point charges, Q1 = -4.0 C and Q2 = +2.0 C, are placed as shown. In Figure 17.14c, ...

[html]Figure 17.14c

Enni Cortu   377   2 Replies

Kayaka

On the earth, when an astronaut throws a 0.250-kg stone vertically upward, it returns to his hand a ...

On the earth, when an astronaut throws a 0.250-kg stone vertically upward, it returns to his hand a ...

On the earth, when an astronaut throws a 0.250-kg stone vertically upward, it returns to his hand a time T later. On planet X he finds that, under the same circumstances, the stone returns to his hand in 2T. In both cases, he throws the stone with th

GollumOfOz   559   6 Replies

rubenphobia

A camper carries her drinks in an ice chest made of styrofoam. The chest is 40 cm × 45 cm × 70 cm, ...

A camper carries her drinks in an ice chest made of styrofoam. The chest is 40 cm × 45 cm × 70 cm, ...

A camper carries her drinks in an ice chest made of styrofoam. The chest is 40 cm × 45 cm × 70 cm, and the walls and lid are 2.5 cm thick. The contents of the chest are ice, water, cans of soft drinks, and other food, all of which are in thermal equi

Brelou   323   2 Replies

Anonymous

(a) What is Coulomb's Law? (b) Find the net electrostatic force on the charge labeled

(a) What is Coulomb's Law? (b) Find the net electrostatic force on the charge labeled

1) (a) What is Coulomb's Law?

(b) Find the net electrostatic force on the charge labeled $P$ in figure 1.

Take $a = 55cm$.

12345

tosha.garza   4101   56 Replies

mahbub

Velocity vector

Velocity vector

An object is moving in the x direction at 1.5 m/s
when it undergoes an acceleration a-> =0.48j^m/s^2.
What is the velocity vector (Vx, vy)?

Anonymous   213   2 Replies

Anonymous

A particle leaves the origin with initial velocity

A particle leaves the origin with initial velocity

A particle leaves the origin with initial velocity Vo=9.0i^+11j^m/s undergoing constant acceleration a=−1.3i^+0.22j^m/s^2.

When does the particle cross the  y axis?
What's its  y coordinate at the time?
How fast is

Anonymous   190   1 Reply

Anonymous

What speed was the rock thrown?

What speed was the rock thrown?

A rock is thrown directly upward from the edge of the roof of a building that is 48.1 meters tall. The rock misses the building on its way down, and is observed to strike the ground 4.00 seconds after being thrown. Neglect any effects of air resistan

Anonymous   231   3 Replies

Anonymous

Determine relative speed of train collision

Determine relative speed of train collision

You're an investigator for the National Transportation Safety Board, examining a subway accident in which a train going at 82 km/h collided with a slower train traveling in the same direction at 26 km/h. Your job is to determine the relative spe

Anonymous   221   3 Replies

bio_man

Angle and initial velocity vector

Angle and initial velocity vector

An ice skater is gliding along at 2.4 m/s when she undergoes an acceleration of magnitude 1.4 m/s2
 for 3.0 s. After that she's moving at 6.6 m/s.

Find the angle between her acceleration vector and her initial velocity vector.

Anonymous   191   2 Replies

Anonymous

What relationship, if any do you see between the shape of the parallax path...

What relationship, if any do you see between the shape of the parallax path...

What relationship, if any do you see between the shape of the parallax path and the ecliptic latitude of the stars?

sciencehelp95   1473   1 Reply

bolbol

In Figure 17.19, a small spherical insulator of mass 10.00 10-2 kg and charge +0.910 C ...

In Figure 17.19, a small spherical insulator of mass 10.00 10-2 kg and charge +0.910 C ...

[html]Figure 17.19

Peryeeee   345   3 Replies

s0073123

How many octaves exist between 100 hertz and 1600 hertz?

How many octaves exist between 100 hertz and 1600 hertz?

How many octaves exist between 100 hertz and 1600 hertz?
A) 4
B) 5
C) 6
D) 7
E) 8

goldensteeez   439   3 Replies

crimson tarter

The length of the telescope is 1.60 m, and it has a magnification of 60.0. What is the focal length ...

The length of the telescope is 1.60 m, and it has a magnification of 60.0. What is the focal length ...

The length of the telescope is 1.60 m, and it has a magnification of 60.0. What is the focal length of the objective lens?
A) 60.0 cm
B) 157 cm
C) 100 cm
D) 128 cm
E) 96.0 cm

Chery   554   4 Replies

noreyaga

A sprinter runs 100.0 m in 12.2 seconds. If he travels at constant acceleration for the first 50.0 m ...

A sprinter runs 100.0 m in 12.2 seconds. If he travels at constant acceleration for the first 50.0 m ...

[html]A sprinter runs 100.0 m in 12.2 seconds. If he travels at constant acceleration for the first 50.0 m and then at constant velocity for the final 50.0 m, what was his peak speed?

▸ 12.3 m/s.

▸ 17.5 m/s.

▸ 8.20 m/s.

hussainizzle   266   3 Replies

AdieMichelle

1.00 mol of oxygen gas (O2) is heated at a constant pressure of 1.00 atm from 10.0C to 25.0C. How ...

1.00 mol of oxygen gas (O2) is heated at a constant pressure of 1.00 atm from 10.0C to 25.0C. How ...

1.00 mol of oxygen gas (O2) is heated at a constant pressure of 1.00 atm from 10.0°C to 25.0°C. How much heat is absorbed by the gas?

▸ 389 J

▸ 544 J

▸ 436 J

▸ 288 J

gslwong   223   2 Replies

Anonymous

How would the period of vibration be changed if the gravitational acceleration were increased by 5%?

How would the period of vibration be changed if the gravitational acceleration were increased by 5%?

How would the period of vibration be changed if the gravitational acceleration were increased by 5%??

Anna818   975   1 Reply

Anonymous

By trial and error, calculate theta for which sin(theta) and differ by 5

By trial and error, calculate theta for which sin(theta) and differ by 5

by trial and error calulate theta for which sin(theta) and differ by 5. Must be done in radians... Someone help please I'm very confused

Anna818   994   1 Reply

habiba

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   187   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   328   2 Replies

Anonymous