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Physics
Page 26
Questions (147,193)
Two charged spheres of charge q and mass m are each hanging from strings and are at equilibrium as shown below:
Give an
4 answers
asked by
Anonymous
1,750 views
I am having trouble with the last portion of this question. If someone can help me, I would sincerely appreciate it.
A bicycle
5 answers
asked by
Matt
4,928 views
If the speed of light through material Z is
2.5×10^8 m/s, what is this material’s index of refraction? The speed of light in a
5 answers
asked by
Maria
6,929 views
A 3800 kg open railroad car coasts along with a constant speed of 8.60 m/s on a level track. Snow begins to fall vertically and
5 answers
asked by
Sasha
5,569 views
A wheel of diameter 28.0 cm is constrained to rotate in the xy plane, about the z axis, which passes through its center. A force
130 answers
asked by
Joe
3,917 views
A party balloon filled with helium deflates to 2/3 of its original volume in 8.0 hours. How long will it take an identical
6 answers
asked by
Amy
3,339 views
If the charge to mass ratio of a proton is 9.58 x 10^7 coulomb/kilogram and the charge is 1.60 x10^-19 coulomb, what is the mass
5 answers
asked by
Hannah
3,219 views
a 0.20 kg mass is attached to the end of a spring causes it to stretch 3cm. what is the spring constant?
5 answers
asked by
Anonymous
2,268 views
Two resistors, one 12Ohms and the other 18 Ohms, are connected in parallel. What is the equivalent resistance of the parallel
5 answers
asked by
Rony
4,892 views
a traffic light is supported by two cables that are 140 degres apart. Each cable exerts a tensile force of 150 N on the night.
4 answers
asked by
idk
2,470 views
Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the
11 answers
asked by
jessie
3,398 views
a 100N force is applied at an angle of 30 degrees horizontal to move a 15kg object at a constant speed for a horizontal distance
5 answers
asked by
Layne
7,899 views
Consider two copper wires with the same cross-sectional area. Wire A is twice as long as wire B. How do the resistivities and
5 answers
asked by
Anonymous
8,598 views
Water is to be pumped to the top of a skyscraper, which is 1270 ft high. What gauge pressure is needed in the water line at the
4 answers
asked by
Sam
3,689 views
a 100 gram bullet is fired from a 10 kg gun with a speed of 1000m/sec. what is speed of recoil
6 answers
asked by
Devin Darkie
3,088 views
Your brother's mass is 35.6 kg and he has a 1.3-kg skateboard. What is the combined momentum of your brother and his skateboard
5 answers
asked by
Brenna
3,621 views
For an object whose velocity in ft/sec is given by v(t) = -3t2 + 5, what is its displacement, in feet, on the interval t = 0 to
4 answers
asked by
Craig
4,025 views
20.) A piano has been pushed to the top of the ramp at the back of a moving van. The workers think it is safe, but as they walk
4 answers
asked by
Anonymous
4,821 views
how much work is done if a force of 12N moves an object a distance of 5m
5 answers
asked by
princess
2,864 views
Two spheres are attached to two identical springs and
separated by 8.0 cm, as in Figure 14. When a charge of 2.5 106 C is placed
5 answers
asked by
Harsh
2,123 views
the total capacitor of a capacitance 3uf and 6uf are connected in series. calculate the equivalent capacitance
7 answers
asked by
Emanuel
5,175 views
please help
The power rating of an electric motor which draws a current of 5 amperes from a 240-volt line is? a. 12.0 kW b. 1.2
4 answers
asked by
pub
1,980 views
An automobile starts from rest and 110
ft attains a speed of 30 mi/h. In what time has it traveled this distance and the is the
7 answers
asked by
zianna
2,077 views
A very large open tank is full of oil whose density is 800 kg/m3 . If the absolute pressure at the bottom of the tank is 1.81 x
5 answers
asked by
a
590 views
The efficiency of a machine is 80% calculate the work done by a person using the machine to raise a load of 300kg through a
7 answers
asked by
Mario
3,744 views
A roller coaster car of mass 400kg starts from rest at point A and passes the point B with a speed of 3m/s.if the distance from
4 answers
asked by
wallacenjovu
1,862 views
A 5.10-g sample of iron is heated from 36.0oC to 75.0oC. The amount of energy required is 89.54 J. The specific heat capacity of
5 answers
asked by
jann
4,907 views
Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 4.2). The empty capacitor
4 answers
asked by
Aine
3,676 views
A 1000-kg car is driving toward the north along a straight road at a speed of 20.0 m/s. The driver applies the brakes and the
5 answers
asked by
Christine
5,380 views
In a diagram of electric field lines, q1 has 9 lines going into it and q2 has 27 lines going out of it. If one of
the charges is
4 answers
asked by
Anonymous
2,072 views
A solid of mass 1.3kg suspended by a string,is completely immersed in water. If tension in the string is 6.0. Find the upthrust
6 answers
asked by
Anonymous
1,348 views
Find the force of attraction b/w two equal but opposite charge of 2*10micro, if the distance between them is 25cm
7 answers
asked by
Joel
1,908 views
A 0.17 kg baseball moving at +20.80 m/s is slowed to a stop by a catcher who exerts a constant force of -376 N.
How long does it
4 answers
asked by
Angela
4,099 views
A parallel-plate capacitor with air between the plates has an area A= 2.00 x 10^-4 m^2 and a plate
separation d = 1.00 mm. Find
4 answers
asked by
Tolen
2,560 views
A guitar string is 90cm long and has a mass of 3.8g . The distance from the bridge to the support post is L=62cm , and the
4 answers
asked by
Phil
11,945 views
Hi, the following is a problem that concerns angular momentum:
Modern hard drives spin very fast! The part that holds the data is
5 answers
asked by
Grace
1,878 views
What is the average power output of a weightlifter who can lift 260 kg to a height of 1.9 m in 1.8 seconds?
5 answers
asked by
Ash
6,638 views
a longitudinal wave with a frequency of 3.0 Hz takes 1.7 s to travel the length of a 2.5-m slinky (see figure 16.3). Determine
4 answers
asked by
Joe
4,972 views
When a yellow light shines on a photosensitive metal, photoelectrons are emitted. As the intensity of the light is decreased,
4 answers
asked by
ashley --
2,683 views
When a mass is attached to a vertical spring, the spring is stretched a distance d. The mass is then pulled down from this
4 answers
asked by
please help!!!!
1,679 views
Explain, in terms of electrical energy, how the operation of a voltaic cell differs from the operation of an electrolytic cell
5 answers
asked by
Anonymous
3,434 views
a collapsible plastic bag contains a gluccose solution. If the average gauge pressure in the atery is 1.33x10^4Pa, what must be
6 answers
asked by
Anonymous
8,557 views
A horizontal force of 45N applied to a crate of mass 9kg is just sufficient to move it. If the crate is now pulled at an angle
9 answers
asked by
Same
2,766 views
An object 5cm high is placed at a distance 12cm from a convex lens of focal length 8 cm.calculate the position,size and nature
7 answers
asked by
Stanley
1,275 views
A plane head north with an airspeed of 420 km/h. However, relative to the ground, it travels in a direction 7.0 west of north.
5 answers
asked by
JHM
3,296 views
Assuming atmospheric pressure to be 1.01 x 10^5 Pa and the density of sea water to be 1025 kg/m^3, what is the absolute pressure
5 answers
asked by
N.
4,366 views
Who will hear the voice of a singer first-a person in the balcony 50 m away from the stage (Fig. 22-19), or a person 2000 km
4 answers
asked by
ami
3,806 views
a bomb is dropped from an airplane travelling horizontally with a speed of 300 mi/hr if the airplane is 10000ft. above the
6 answers
asked by
Andrea
3,855 views
A spring gun is made by compressing a spring (assumed to be perfect) and latching it. A spring of constant k = 60 N/ m is used
5 answers
asked by
Nazgul
2,505 views
You are playing with a yo-yo with a mass of 225 g. The full length
of the string is 1.2 m. (a) Calculate the minimum speed at
5 answers
asked by
kenny
736 views
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