Physics

An auto accelerates forward from 7.0 m/s at a uniform 0.71 m/s2. It travels a distance of 1.033 km while accelerating.
(a) How fast is the auto moving just as it is traveled the 1.033 km?
(b) How many seconds did it take to travel the 1.033

1 2...9 10

Pd96 5388 139 Replies

uly

2 years ago

(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 $a = 55cm$.

1 2 3 4

tosha.garza 3278 52 Replies

Tasvir Hasnain 2122465642

8 months ago

As shown in the figure, three small charges are equally spaced on the arc of a circle that is ...

As shown in the figure, three small charges are equally spaced on the arc of a circle that is centered at the charge Q, where Q = +23 nC and all the other quantities are accurate to two significant figures. What is the magnitude of the net electric f

1 2 3 4

Chery 3593 45 Replies

Kane Dacier

3 years ago

A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with ...

A red ball with a velocity of +3.0 m/s collides head-on with a yellow ball of equal mass moving with a velocity of -2.0 m/s. What is the velocity of the yellow ball after the collision?
A) zero
B) +3.0 m/s
C) -2.0 m/s

1 2 3

Brelou 1556 41 Replies

Mahmoud Kassab

3 years ago

A rotating flywheel can be used as a method to store energy. If it has 2.00 106 J of kinetic energy ...

A rotating flywheel can be used as a method to store energy. If it has 2.00 106 J of kinetic energy when rotating at 400 rad/s, and if a frictional torque of 4.00 N m acts on the system, in what interval of time would the flywheel come to rest?

1 2 3

nevinjoshy2001 2623 38 Replies

AlexJ98

2 years ago

Two identical tiny balls of highly compressed matter are 1.50 m apart. When released in an orbiting ...

Two identical tiny balls of highly compressed matter are 1.50 m apart. When released in an orbiting space station, they accelerate toward each other at 2.00 cm/s2. What is the mass of each of them? (G = 6.67 × 10-11 N ∙ m2/kg2)

1 2 3

Pd96 3847 37 Replies

Neil Reddy

3 years ago

A forklift pushes a 100-kg crate, starting from rest, exerting a horizontal force of magnitude F. ...

[html]A forklift pushes a 100-kg crate, starting from rest, with a horizontal force of magnitude F. The graph in the figure shows the x component of this force as a fun

1 2 3

Pd96 4981 36 Replies

Jesse Bruzan

3 years ago

Four 2.0-µC point are at the corners of a rectangle with sides of length 3.0 cm and 4.0 cm. What ...

Four 2.0-µC point are at the corners of a rectangle with sides of length 3.0 cm and 4.0 cm. What is the electric potential (relative to infinity) at the midpoint of the rectangle? (k = 1/4πε0 = 9.0 × 109 N ∙ m2/C2)
A) 1.3 MV
B) 2.9 M

1 2 3

Chery 2358 36 Replies

Laziest Alias

3 years ago

A uniform solid cylindrical log begins rolling without slipping down a ramp that rises 28.0° above ...

A uniform solid cylindrical log begins rolling without slipping down a ramp that rises 28.0° above the horizontal. After it has rolled 4.20 m along the ramp, what is the magnitude of the linear acceleration of its center of mass?
A) 9.80 m/s2

1 2 3

bewley 1837 36 Replies

Arthur Kim

3 years ago

Tan's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as ...

Tan's face is 20 cm in front of a concave shaving mirror. If he observes his image to be twice as big and upright, what is the focal length of the mirror?
A) 10 cm
B) -40 cm
C) -50 cm
D) 40 cm
E) 50 cm

1 2 3

Chery 3210 35 Replies

Ivan Reyes1

2 years ago

Suppose 39 g of reactant A is mixed with 40 g of reactant B. After a chemical reaction takes place ...

Suppose 39 g of reactant A is mixed with 40 g of reactant B. After a chemical reaction takes place between A and B, which statement is correct?
a. The total mass of products plus any unreacted reactants will be 79 g.
b. The total mass o

1 2 3

Annmarie 2120 35 Replies

Samuella Diaz

2 years ago

An object of length 3.00 cm is inside a plastic block with index of refraction 1.40 . If the object ...

An object of length 3.00 cm is inside a plastic block with index of refraction 1.40 . If the object is viewed through the top surface of the block at a non-zero angle from the normal, where is the object relative to its image?
a. in the same d

1 2 3

lyss96 2052 34 Replies

Reham Abdelsalam

3 years ago

A car that is initially moving at 7.50 m/s begins to accelerate forward uniformly at 0.550 m/s2.(a) ...

A car that is initially moving at 7.50 m/s begins to accelerate forward uniformly at 0.550 m/s2.
(a) How long after beginning to accelerate does it take the car to move 3.50 km?
(b) How fast is the car moving just as it has traveled 3.50 km

1 2 3

Pd96 2908 33 Replies

Alec.Voegele

3 years ago

An electron moving in the +y direction, at right angles to a magnetic field, the magnetic force ...

An electron moving in the +y direction, at right angles to a magnetic field, the magnetic force exerted on it is in the -x direction. The direction of the field is in the
A) -x direction.
B) +x direction.
C) +y direction.
D

1 2 3

Chery 1111 32 Replies

Lhea Anne Calma

3 years ago

How many constitutional isomers that are trifluoroethanes exist?

How many constitutional isomers that are trifluoroethanes exist?
a. 3
b. 2
c. 4
d. 8
e. 5

[Ques. 2] For Newton's third law, the action and reaction forces are equal in magni

1 2 3

jnote01 1782 31 Replies

MistyM

3 years ago

A car of mass 1689 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ...

A car of mass 1689 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ensure that the collision is essentially elastic. If the velocity of the truck is 17 km/h (in the same direction as the car's initial veloci

1 2 3

bewley 1988 30 Replies

Ravenna Shaw

A year ago

A majorette fastens two batons together at their centers to form an X shape. Each baton consists of ...

A majorette fastens two batons together at their centers to form an X shape. Each baton consists of an extremely light 1.2-m bar with small 0.25-kg balls at each end. What is the moment of inertia of this baton about an axis through the center

1 2 3

Pd96 2024 29 Replies

ffffffsdssss

3 years ago

A turbine blade rotates with angular velocity ω(t) = 2.00 rad/s- 2.1.00 rad/s3 t2. What is the ...

A turbine blade rotates with angular velocity ω(t) = 2.00 rad/s- 2.1.00 rad/s3 t2. What is the angular acceleration of the blade at t = 9.10 s?
A) -38.2 rad/s2
B) -19.1 rad/s2
C) -86.0 rad/s2
D) -36.2 rad/s2
E) -172 rad/s2

1 2 3

bewley 1303 28 Replies

Abdullah Bada

2 years ago

When a 2.75-kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases uniformly ...

When a 2.75-kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases uniformly from 10.0 rad/s to 6.30 rad/s in 5.00 s.
(a) What is the magnitude of the angular acceleration of the fan?
(b) Through what angle (in degr

1 2 3

bewley 2382 28 Replies

chacha

3 years ago

What is the formula of a compound formed from the ions M3+ and X3-?

What is the formula of a compound formed from the ions M3+ and X3-?
a. M2X
b. MX
c. M2X3
d. MX2

[Ques. 2] The three principal types of mountain building are volcanic, fault-block,

1 2 3

bradenodom_3 3046 28 Replies

hellomate

3 years ago

While spinning down from 500.0 rpm to rest, a solid uniform flywheel does 5.1 kJ of work. If the ...

While spinning down from 500.0 rpm to rest, a solid uniform flywheel does 5.1 kJ of work. If the radius of the disk is 1.2 m, what is its mass?
A) 5.2 kg
B) 4.4 kg
C) 6.0 kg
D) 6.8 kg

1 2

GollumOfOz 1715 27 Replies

Shouqin Feng

3 years ago

A very thin uniform rod, 2.40 m long and of weight 135 N, has a frictionless hinge at its lower end. ...

A very thin uniform rod, 2.40 m long and of weight 135 N, has a frictionless hinge at its lower end. It starts out vertically from rest and falls, pivoting about the hinge. Just as it has rotated through an angle of 55.0°, what is the downward accele

1 2

bewley 2134 27 Replies

Cédric Claerbout

3 years ago

A 90-gram wire that is 1.0 m long is under tension. When a transverse wave of frequency 890 Hz ...

A 90-gram wire that is 1.0 m long is under tension. When a transverse wave of frequency 890 Hz travels down the wire, its wavelength is 0.10 m and its amplitude is 6.5 mm. What is the tension in the wire?
A) 710 N
B) 820 N
C) 930 N

1 2

Chery 2246 26 Replies

Cody Holman

3 years ago

A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the normal. ...

A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the normal. In the plate, this beam makes an angle of 22.4° with the normal. What is the speed of light in this glass?(c = 3.0 × 108 m/s)

1 2

Chery 3064 25 Replies

Justin Jones1

2 years ago

A ceiling fan is turned on and reaches an angular speed of 120 rev/min in 20.0 s. It is then turned ...

A ceiling fan is turned on and reaches an angular speed of 120 rev/min in 20.0 s. It is then turned off and coasts to a stop in 40.0 s. In the 60.0 s of rotation, through how many revolutions did the fan turn?
a. 251
b. 377
c. 12

1 2

vgrdiver 1690 25 Replies

miniMINX Name

3 years ago

Suppose you stay home on Earth and watch a spaceship that leaves on a long trip

Suppose you stay home on Earth and watch a spaceship that leaves on a long trip at a constant acceleration of 1g.
a. At an acceleration of 1g, approximately how long will it take before you see the ship traveling away from Earth at half t

1 2

ppk 6106 24 Replies

Fint15

9 years ago

How is Absolute zero possible?

If Absolute zero, ( -459.67 degrees Fahrenheit or minus 273.15 Celsius), is the hypothetical point at which a substance would have no motion and no heat. How can this be possible with the existing laws of thermodynamics?

1 2

micooo 1636 24 Replies

datasian

11 years ago

A solid uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface ...

A solid uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s when it rolls off the edge and falls towards the floor, 1.1 m below. What is the rotational kinetic energy of the ba

1 2

Chery 1957 24 Replies

PlehDeenIoN

3 years ago

A space probe approaches a planet, taking measurements as it goes. If it detects a potential ...

A space probe approaches a planet, taking measurements as it goes. If it detects a potential difference of 6000 MV between the altitudes of 253,000 km and 276,000 km above the planet's surface, what is the approximate electric field strength pro

1 2

Chery 1617 24 Replies

Helena Li

3 years ago

Vector A has a magnitude 5.00 and points in a direction 40.0° clockwise

Vector A has a magnitude 5.00 and points in a direction 40.0° clockwise from the negative y axis. What are the x and y components of vector .
A) Ax = 3.83 and Ay = 3.21
B) Ax = 3.83 and Ay = -3.21
C) Ax = -3.21 and Ay = -3.

1 2

bewley 1586 24 Replies

I Killer

3 years ago

The figure shows a pV diagram for 2.6 g of ideal helium gas that undergoes the process 1 2 3. Find ...

[html]The figure shows a pV diagram for 2.6 g of ideal helium gas that undergoes the process 1 → 2 → 3. Find the value of volume V3

1 2

alexweebz 1571 24 Replies

Acer Matthew Asistio

2 years ago

How did Albert Einstein not make even ONE mistake in his whole life as a physicist!? Please help!?

His creative mind helped him develop General Relativity. His creative mind helped start the study of black holes. His creative mind helped him to become the smartest scientist/thinker of all time.

HOW DID A PERSON AS SMART AS EINSTEIN NEVER MADE ONE

1 2

julibyrd 1104 23 Replies

dastefster

11 years ago

A 25-m wire of diameter 0.30 mm draws 0.499 A when connected across a 3.0-V potential difference.(a) ...

A 25-m wire of diameter 0.30 mm draws 0.499 A when connected across a 3.0-V potential difference.
(a) What is the resistance of the wire?
(b) What is the resistivity of the material from which the wire is made?

1 2

Chery 1887 23 Replies

SimplyGriffo

3 years ago

A cell phone that is 8.90 cm tall is placed in front of a convex mirror. The image of the phone is ...

A cell phone that is 8.90 cm tall is placed in front of a convex mirror. The image of the phone is 7.80 cm tall and is located 14.8 cm from a mirror. What is the mirror's focal length?
A) -120 cm
B) -105 cm
C) +16.9 cm

1 2

Chery 2042 23 Replies

azmair bains

2 years ago

A heat engine has an efficiency of 35.0% and receives 150 J of heat per cycle. (a) How much work ...

A heat engine has an efficiency of 35.0% and receives 150 J of heat per cycle.
(a) How much work does it perform in each cycle?
(b) How much heat does it exhaust in each cycle?

1 2

Brelou 1798 23 Replies

استغفر الله و

2 years ago

A soccer ball is released from rest at the top of a grassy incline. After 6.4 seconds the ball has ...

A soccer ball is released from rest at the top of a grassy incline. After 6.4 seconds the ball has rolled 91 m with constant acceleration, and 1.0 s later it reaches the bottom of the incline.
(a) What was the ball's acceleration?
(b)

1 2

Pd96 1401 22 Replies

Amanda Noel

2 years ago

How much energy is necessary to place three +2.0-µC point charges at the vertices of an equilateral ...

How much energy is necessary to place three +2.0-µC point charges at the vertices of an equilateral triangle of side 2.0 cm if they started out extremely far away? (k = 1/4πε0 = 9.0 × 109 N ∙ m2/C2)
A) 4.5 J
B) 5.4 J
C) 6.7 J
D)

1 2

Chery 2066 22 Replies

Kay raksrithong

2 years ago

If we are going to “listen” for electromagnetic radiation at 21 cm from extraterrestrial ...

If we are going to “listen” for electromagnetic radiation at 21 cm from extraterrestrial sources, then we had better not generate too many waves at this wavelength from terrestrial sources. The standard FM broadcast band (as you can see by look

1 2

staedtler 1619 22 Replies

penguin05

3 years ago

A 5.0-m long, 12-kg uniform ladder rests against a smooth vertical wall with the bottom of the ...

A 5.0-m long, 12-kg uniform ladder rests against a smooth vertical wall with the bottom of the ladder 3.0 m from the wall. The coefficient of static friction between the floor and the ladder is 0.28. What distance, measured along the ladder from the

1 2

bewley 1587 22 Replies

Yamkela Gubela

2 years ago

The diagrams below each show the motion of a distant star relative to Earth (not

The diagrams below each show the motion of a distant star relative to Earth (not to scale). The red arrows indicate the speed and direction of the star’s motion: Longer arrows mean faster speed. Rank the stars based on the Doppler shift that we would

1 2

kode 25161 21 Replies

Anonymous

A year ago

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