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3 charges sit on vertical equilateral triangle the side of each is 30.0 cm. if the triangle are A= +4.0 uC B=+5.0 uC and C=+6.0
2 answers
asked by
sara
710 views
In order to qualify for the finals in an race, a runner must achieve an average speed of 5.24 m/s for the entire mile race. If
1 answer
asked by
tyler
445 views
A ball is thrown upward from the top of a 24.4 m tall building. The ball's initial speed is 12 m/s. At the same instant, a
3 answers
asked by
Anonymous
879 views
The waves emitted from a source A is given by
y1 = 6 sin π(20t – 0.5x) where y1, x and t are expressed in units of meter and
1 answer
asked by
niti
453 views
A partly-full paint can has 0.66 U.S. gallons of paint left in it. (a) What is the volume of the paint, in cubic meters? (b) If
2 answers
asked by
Anonymous
615 views
The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table.
2 answers
asked by
Kendall
535 views
On an otherwise straight stretch of road near Moffat, Colorado, the road suddenly turns. This bend in the road is a segment of a
1 answer
asked by
Amy
1,067 views
a golf ball of mass 0.045 kg is moving in the +x direction with a speed of 9.0 m/s, and a baseball of mass 0.145 kg is moving in
3 answers
asked by
jaymark
759 views
A ball rolls off the edge of a balcony at 10 m/s. what is the speed after 1s in the air?
3 answers
asked by
mike
1,052 views
A man is running at speed c (much less than the speed of light) to catch a bus already at a stop. At t=0, when he is a distance
4 answers
asked by
metu
1,401 views
A charge of -2.73 μC is fixed in place. From a horizontal distance of 0.0465 m, a particle of mass 9.50 x 10-3 kg and charge
3 answers
asked by
derek
1,431 views
A 2,300-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls 3.00 m before coming into contact
3 answers
asked by
Anonymous
1,595 views
11. What is the acceleration of a 4000 kg airplane that has a force on it of 24,000 N
2 answers
asked by
alisa
738 views
difference between the type of wave formed in the wire and the formed in the air?
1 answer
asked by
danisa
283 views
a ball rolls off a desk at a speed of 3.0m/s and lands 0.40 seconds later. How far from the base of the desk does the ball
3 answers
asked by
sharmaine bell
1,781 views
Suppose you and a friend, each of mass 65 , go to the park and get on a 4.5 -diameter merry-go-round. You stand on the outside
2 answers
asked by
win
545 views
a baseball is thrown 30 m/s backwards from a truck moving forward 50 m/s, how fast will the ball strike the glove of a
1 answer
asked by
Anonymous
399 views
A force of 20 newtons is exerted on a chair from its right and a force of 12 newtons is applied from its left. What is the net
2 answers
asked by
kiandra
1,234 views
Question Part
Points Submissions Used A soccer player kicks a rock horizontally off a 41.7 m high cliff into a pool of water. If
1 answer
asked by
juj
455 views
An airplane flies due north at 200 km/h relative to the air. There is a wind blowing at 70 km/h to the northeast relative to the
4 answers
asked by
BILLY
1,696 views
Light is shone on a metal and photoelectrons are emitted.
Can you tell me the three things from the list below which might cause
3 answers
asked by
vanya
529 views
A car driving along a highway at a speed of 15 m/s strays onto the shoulder. Evenly spaced parallel grooves called rumble strips
1 answer
asked by
Anonymous
444 views
equation F = mv^2/r
i don't get why the velocity is squared can anyone explain? this is waves on strings
1 answer
asked by
visoth
287 views
equation F = mv^2/r
i don't understand why velocity is squared can anyone explain. this is waves on string
1 answer
asked by
visoth
381 views
a motor of mass 800kg traveeling at 20m/s
is brought to rest by brakes in 100m calculate the average braking force required if
1 answer
asked by
habiba abdullahi
411 views
A canon is angled at 45º and fires a canon ball at 100 m/s. How long will it take the canon to reach it's maximum height?
1 answer
asked by
patrick
424 views
A canon is angled at 45º and fires a canon ball at 100 m/s. How long will it take the canon to reach it's maximum height?
1 answer
asked by
patrick
382 views
Craig launches the basketball at an angle of 65.0 degrees above the horizontal from a height of 2.00m above the floor.He imparts
1 answer
asked by
juliet edmund
428 views
a negative charge of -0.55 uc an unknown charge 0.300 m diectly below it. what are the magnitude an direction of the force that
3 answers
asked by
yanis
600 views
two point charges are located on the y axis as follows :
charge q1 = -1.50nc at y= -0.600m, and charge q2 = +3.2nc at the origin
4 answers
asked by
yanis
1,732 views
two point charges are placed on the x axis as follows:
charge q1 = +4.00 nc is located at x = 0.200 m, and charge q2 = +5.00 nc
4 answers
asked by
yanis
8,754 views
a resistor has a voltage of 6.65 V and a current of 4.45 A. it is placed in a calorimeter containing 200g of water at 24 degree
3 answers
asked by
julie
2,004 views
A progressive wave is represented by the equation where y is in mm, t in seconds and x is a distance from fixed point origin, O
1 answer
asked by
ash05
443 views
A basketball player runs up and down a basketball court 3 complete times in 60 seconds the basketball court is 30 meter long
1 answer
asked by
Dominique
1,137 views
A basketball player runs up and down a basketball court 3 complete times in 60 seconds the basketball court is 30 meter long
1 answer
asked by
Dominique
454 views
a 2500 car enters curve with a radius of 45 m .if the car is moving at speed of 35 m/s.what is the centripetal force that
1 answer
asked by
said
928 views
Three 30mm diameter cables support the car in a cable elevator. Inside the car is a safety notice.
SAFE WORKING LOAD 33 PERSONS
1 answer
asked by
alax
442 views
a 1.6kg block of wood is floating in water. what is the magnitude of the buoyant force the block?
1 answer
asked by
katie
365 views
four moles of gas are contained in 2 litre vessel at the temperature of 200c at a pressure of 10atm.the gas is allowed to expand
1 answer
asked by
Anonymous
441 views
The composite bar BCD in the figure is composed of an inner aluminum cylindrical core of length 2l=2m and radius R=1cm and a
7 answers
asked by
asas
524 views
The bar in the figure has constant cross sectional area A . The top half of the bar is made of material 1 with mass density ro1
2 answers
asked by
asas
523 views
an enemy spaceship is moving toward your starfighter with a speed of 0.4c, as measured in your reference frame. The enemy ship
2 answers
asked by
yanis
861 views
A car traveling at 80km/hr decelerates at 1.5m/s^2. Calculate
a) the time it takes to stop. b) The distance travelled in the 3rd
4 answers
asked by
Anonymous
539 views
a plane aims north at 450.0km/hr. the wind blows from the south at 100.0km/hr. what is the planes ground velocity.
3 answers
asked by
Adil
424 views
1.
A marathon runner sets out on a 50.0 km race that starts at Market Mall. 5.00 hours later he crosses the finish line back at
3 answers
asked by
Musa
492 views
An automobile is moving in an easterly direction at a velocity of 100km/hr. He sees an emergency vehicle and slows down to 60
1 answer
asked by
Musa
374 views
1.
Given the following velocity-time graph: V-T Graph 10 Velocity, m/s 5 10 15 Time -10 a. Calculate the displacement at the end
1 answer
asked by
sarah
880 views
A 5.0 kg mass is dropped from the Leaning Tower of Pisa. It takes 16 seconds to reach the ground. A 10 kg mass would take how
1 answer
asked by
Please answer this question as soon as posibble
328 views
a sportcar moving from rest 0 to 100km/h ..there hanging a pendulum in the car..what will be the angle pendulum can make with
1 answer
asked by
krishna
317 views
There are 2 vehicles. Vehicle 1 a ford taurus at 3400 pounds is traveling 50mph headed east. Vehicle 2 is a dodge ram truck at
1 answer
asked by
missi
907 views
microwave antennna with a mass of 96kg
sits a top a tower that is 40 m tall. what is the antenna potential energy.how do not know
1 answer
asked by
fran
262 views
A rocket accelerates straight up from rest for 20 seconds with an acceleration of 8 m/s2. After 20 seconds the rocket motor
2 answers
asked by
O.albania
553 views
9. A 2.00-kg object is attached to a spring and placed on a frictionless, horizontal surface. A horizontal force of 20.0 N is
1 answer
asked by
Ika Diana
898 views
An unmarked police car traveling a constant 95km/h is passed by a speeder. Precisely 2.00s after the speeder passes, the police
2 answers
asked by
mucray
814 views
If a curve with a radius of 80m is properly banked for a car traveling 63km/h , what must be the coefficient of static friction
1 answer
asked by
fermona
718 views
Consider a train that rounds a curve with a radius of 570m at a speed of 160 km/h (approximately 100 mi/h)Calculate the friction
4 answers
asked by
mert
3,556 views
After skiding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of
1 answer
asked by
tcc
436 views
Consider the earth following its nearly circular orbit (dashed curve) about the sun.(Figure 2) The earth has mass
5 answers
asked by
mert
4,840 views
A satellite used in a cellular telephone network has a mass of 2010kg and is in a circular orbit at a height of 770km above the
4 answers
asked by
cuzer
2,033 views
A Ferris wheel 26.0m in diameter rotates once every 15.0s What is the ratio of a person's apparent weight to her real weight at
2 answers
asked by
cuzer
519 views
A Ferris wheel 26.0m in diameter rotates once every 15.0s What is the ratio of a person's apparent weight to her real weight at
2 answers
asked by
cuzer
562 views
A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9×107m . The magnitude of the
1 answer
asked by
cuzer
837 views
Planet A and planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than is planet
3 answers
asked by
cuzer
521 views
A Ferris wheel 26.0m in diameter rotates once every 15.0s .
What is the ratio of a person's apparent weight to her real weight at
2 answers
asked by
cuzer
497 views
A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9×107m . The magnitude of the
4 answers
asked by
kerat
863 views
Determine the time it takes for a satellite to orbit the Saturn in a circular "near-Saturn" orbit. A "near-Saturn" orbit is at a
3 answers
asked by
jasika
1,058 views
The velocity of cylinder which is released from rest on Ө degree incline after it has rolled through a distance l is given by
1 answer
asked by
ripon
332 views
You have a mass of 68 kg and are on a 51-degree slope hanging on to a cord with a breaking strength of 152 newtons. What must be
1 answer
asked by
gugu
481 views
ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative
1 answer
asked by
ty
406 views
As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length
1 answer
asked by
koler
1,177 views
As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length
1 answer
asked by
koram
957 views
Draw the vector C⃗ =0.5A⃗ +2B⃗ .
1 answer
asked by
koram
1,248 views
A ball is shot from the top of a building with an initial velocity of 16m/s at an angle θ = 43∘ above the horizontal.
Part A
2 answers
asked by
koram
1,036 views
Strip electrons from an atom and the atom becomes a
1 answer
asked by
Anonymous
322 views
Strip electrons from an atom and the atom becomes a
1 answer
asked by
Anonymous
374 views
Bungee Jumping.
A bungee jumper jumps from a tall bridge attached to a light elastic cord (bungee cord) of unstretched length L.
2 answers
asked by
Anonymous
1,196 views
A 2.25kg book is dropped from a height of 2.5m what is the acceleration?
1 answer
asked by
andrew
379 views
A spacecraft of mass = 4673 kg with a speed 5.0 10 m/s approaches Saturn which is moving in the opposite direction with a speed
1 answer
asked by
Anonymous
446 views
A 1000-kg satellite travels with an orbital speed of 500 m/s around a planet at an orbital raduis of 8000 km. What is the mass
2 answers
asked by
Anonymous
519 views
If we imagine that a bulb of 300W lights on a sphere of 0,5m of radius. If we consider only the half of the area of the sphere,
1 answer
asked by
Emile
304 views
Consider a rocket in space that ejects burned fuel at a speed of 1.5 km/s with respect to the rocket. The rocket burns 9 % of
5 answers
asked by
juanpro
574 views
A source of sound emits waves at a frequency 650 Hz. An observer is located at a distance 190 m from the source. Use m/s for the
10 answers
asked by
juanpro
584 views
calculate the centripetal acceleration and the forcw acting on an aero plane of mass 1750Kg turning on a circle 430m radius at a
1 answer
asked by
nashath
357 views
Can a small child play with a fat child on the seesaw? Explain how?
2 answers
asked by
Farida
479 views
What is the necessary coefficient of friction needed to keep a 1200 kg car on a road moving at a speed of 27 m/s on a turn with
1 answer
asked by
Marina
393 views
A spring lies on a horizontal table, and the left end of the spring is attached to a wall. The other end is connected to a box.
4 answers
asked by
nada
1,975 views
Depending on how you fall, you can break a bone easily. The severity of the break depends on how much energy the bone absorbs in
1 answer
asked by
nada
843 views
an alpha particle of mass m= 6.6 x 10^-27 kg has a speed of .81c, where the speed of light is c= 3 x 10^8 m/s. The alpha
1 answer
asked by
NADIA
446 views
two of 5newton and 7newton respectively act on an object.when will the resultant of the two vectors be at a maximum?
1 answer
asked by
pretty
450 views
if the force vector F elect A-->B is in the positive direction form the unit vector r A-->B , the unit vector must be multiplied
1 answer
asked by
Salute
423 views
The drawing shows a device that you can make with a piece of cardboard, which can be used to measure a person's reaction time.
1 answer
asked by
Anonymous
1,309 views
Two volleyballs, each of mass 0.300 kg, are charged by an electrostatic generator. each is attached to an identical string and
2 answers
asked by
sila
632 views
Two volleyballs, each of mass 0.300 kg, are charged by an electrostatic generator. each is attached to an identical string and
3 answers
asked by
Anonymous
519 views
A student throws a ball vertically upward such that it travels 6.8m to its maximum height. What is the average speed? What is
1 answer
asked by
bety
496 views
A student throws a ball vertically upward such that it travels 6.8m to its maximum height.If it i caught at 2.4s. What is the
2 answers
asked by
bety
499 views
It is said that like charges repel. You should have observed that after the sticky side
of two pieces of scotch tape are pulled
2 answers
asked by
tukoye
713 views
It is said that unlike charges attract. You should have observed that after the sticky
side of a piece of scotch tape is pulled
3 answers
asked by
tukoyyr
451 views
A +4 µC point charge is in the x-y plane at the point (3.0 m, 0.0m)
while a +10 µC point charge is at the point (0.0 m, 1.0 m).
2 answers
asked by
Asude
594 views
ten dipoles, each consisting of two charges +- 19 uC, are located within a spherical surface, the radius of which is 2 mm. What
1 answer
asked by
buline
656 views
If there are fewer electric field lines leaving a Gaussian surface than there are entering the surface, what can you conclude
1 answer
asked by
boluner
491 views
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