Math/Physics
214,834 results, page 45

Physics
For the problem (8.99 X 10^9 NM^2/c^2)(1 X 10^6c) / (.1m)^2 = .90 N When I put this in my calculator I did not get .90N. Am I suppose to convert the units to get the answer. Thank you for your help. 
physics
what is the refrevtion of waves? And what are the laws'of refraction? Also about phase change. 
Physics
I just have a question....How to know if the volt is ve or not? and How to know if a charge has deficit or excess electrons ? 
Physics
A 0.055 kg golf ball leaves the tee at 50 m/s. what is its change in momentum (impulse) ? 
physics
Which is the vector quantity that describes the shortest path between two points? 
physics
a truck travels at 90km/hr W for 10 min. then at 110 km/ hr for 38 km what was the trucks average velocity 
physics
What is the apparent weight of a lead brick 2.0 in x 2.0 in x 8.0 in if placed in oil with density p=0.93 g/cm^3 (Ppb=11.4 g/cm^3)(1 in. = 2.54 cm) 
physics
How do i find the mass of an object if it took 270 J of work to move it 15 meters? 
physics
a ball is dropped from the top of a 5m tall building. what is the velocity when it hits the ground? 
Physics?
the total massenergy of one pound of anything is about how many joules 
Physics
If the specific volume of red brass is 0.001865 ft/3lb. What would be the density? Thanks! 
physics
what is the strength of the electric field at (x,y)=(3.0m, 3.0m)? where v=(120x^2290y^2)V, where x and y are in meters. Please explain. thanks 
Physics
Calculate the average speed of the car in km/h, it can accelerate from 96.56 km/hr in 4.3 seconds. Distance is not provided 
Physics
How much impulse is given to a 25 kg train car that is accelerated from rest to 12 m/s in 4 sec? 
Physics
what is the average force needed to stop a car traveling 28m/s in 55m? 
Physics
what is the average force needed to stop a car traveling 28m/s in 55m? 
physics
why do we not feel weightless even though we are in "free fall" toward the sun? 
physics
An electron with initial speed = 2.54×10^7 m/s is traveling parallel to an electric field of magnitude = 1.66×10^4 N/C . 
Physics
Find the maximum height reached by a ball thrown upward at a velocity of 95 ft/s 
Physics
A horse on a merrygoround is 20 ft from the center and travels at 10 mph. What is its angular speed? 
Physics
At what temp would an intrensic semiconductor behave like a perfect insulator?Why? 
Physics..PLZ HELP!
The magnitude of the magnetic field 8.0 cm from a straight wire carrying a current of 6.0 A is A) 3.0 ƒÎ ~ T. B) 1.5 ~ T. C) 1.5 ~ T. D) 3.0 ~ T. E) 3.0 ~ T. 
Physics
What must the critical angle be if light transmits from diamond into water? 
Physics
What does a simple pendulum travel through at the lowest point during its period? 
PHYSICS
At what angle should you launch a projectile from the ground so that it has the greatest time of flight? 
Note for Ms. Sue
Check out the Physics posting on the top of the list. Can it be deleted? 
physics
A strong lightning bolt transfers about 26 C to Earth. How many electrons are transferred? 
physics
a40w motor conectedto a 9v battery can lift an object 40m in 10s 
physics
a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up. 
physics
a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up. 
physics
c). at what speed does it hit the ground? d). what total length of time is the ball in the air 
physics
Find the outside surface area. Note that the containter has a top. (Assume a = 1.95 in, b = 1.35 in, c = 1.3 in, d = 1.25 in, and e = 2 in.) 
physics
Two point charges, +3.27 µC and 6.15 µC, are separated by 1.08 m. What is the electric potential midway between them? 
physics
what law is it when gravity pushes down on a rocket that is accelerating at a rate of 270 km/h 
physics
How does friction slow down a moving object — for example, a soccer ball? 
physics
How do we represent the graph for a ball which is dropped to the ground and caught when it bounces up again? 
physics
How do we represent the graph for a ball which is dropped to the ground and caught when it bounces up again? 
physics
How do we represent the graph for a ball which is dropped to the ground and caught when it bounces up again? 
physics
For the vectors in the figure below, with a = 8, b = 7, and c = 113, calculate the following dot products. 
physics
What type of contamination involves Rags, tie wraps, and safety wire? 
Physics
1. How much work must be done to stop a 1750 kg truck traveling at 110.0 km/h? 
physics
if a car goes twice as fast will the breaking distance also double 
PHYSICS
EXPLAIN FRICTION AT RIGID SUPPORT OF A PENDULUM SUSPENDED USING A STRING. 
Physics
Calculate the power of a hair dryer that operates on 120V and draws a current of 10 A. 
physics
What is the magnitude of the electrostatic force on a +5 C harge 1.75 m to the left of a 2.5 C Charge? (show your work) 
physics
A car traveling at 5.9 m/s accelerates at 2.12 m/s2 for 19.5 seconds. To the nearest meter how far does it travel. 
Physics
How much work does it take to stretch a spring with k= 150N/M 10cm from equilibrium? 
Physics
Find the deBroglie wavelength of a 0.10kg ball moving at 19.0m/s? Why don’t we see this wave? 
Physics
If an object on Pluto has a mass of 10 kg and a weight of 6.6 N, what is the acceleration due to gravity at its location? 
physics
what is the source of error occur in experiment Standing Waves (tuning fork)? 
Physics
An object with an initial velocity of 5 m/s has a constant acceleration of 2 m/s^2. When its speed is 15 m/s how far has it traveled? 
physics
an automobile travels at a uniform speed of 88 kph. how many metres does it travel in 1 second? 
Physics
What is electric field required at the tip of sharp needle to ionize air? 
physics
2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground? 
physics
2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground? 
physics
2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground? 
physics
2) The weight of tank is 50 000 kg, area of his tracks is 5 m2. What pressure acts on the ground? 
Physics
What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 µC and a = 2.50? (The positive direction is to the right.) 
Physics
What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 µC and a = 2.50? (The positive direction is to the right.) 
physics
if a swimmer swims 85.4 yards in five minutes, how many meters will he swim in 70.0 seconds? 
Physics
Could someone explain to me about how live, earth and neutral wires work? 
physics
A car accelerates uniformly from 10m/s to 24m/s.Ehat is its average speed? 
Physics
I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it 
Physics
I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it 
Physics
how to find the max height of a cat that is thrown at 9.8 m/s and is in the air for a total of 4 seconds. 
physics
Calculate the speed of an electron that is accelerated through the potential difference of 123 V. 
Physics
Have no idea how to do this! Determine the weight of a 1768.0kg car which is moving at a speed of 26 m/s. 
physics
A 0.355kg object undergoing SHM has ax = 2.30 m/s2 when x = 0.235 m. What is the time for one oscillation? 
Physics  projectile
a ball is thrown straight up at 50 m/s. What speed will it be when it returns to the thrower's hand? 
Physics
the higher the angle the longer an objecg will be in the air , but dose that mean it will go further ? 
physics
a 4.5kw electric motor is 90% efficient.how much energy it use in 20 seconds. 
Physics
5.A coin and a piece of glass are both heated to 60°C. Which will feel warmer when you touch it? 
Physics
A coin and a piece of glass are both heated to 60°C. Which will feel warmer when you touch it? 
Physical Science
What are three medical technologies that rely on the physics of elementary particles? 
PHYSICS
How could you repair an electric fan that is not working properly? Apply scientific method. 
PHYSICS
How will you prepare a laboratory procedure to verify the validity of the hypothesis? Give an example. 
Physics
Can you give me the summary of work,force,potential & kinetic energy,power? 
Physics
A simple harmonic pendulum has a period of 3.19 s and initial speed of 2.12 m/s. Find the length. 
physics
A magnetic field is uniform in a region of radius 10 cm, and increasing at 0.02 Tesla/second. 
physics
In one dimension ,how does energy depend on size of region if an electron is confined there ?? 
physics
3 factors that we must always give when expressing a force vector quantity 
physics
3 factors that we must always give when expressing a force vector quantity 
physics
3 factors that we must always give when expressing a force vector quantity 
physics
A rock is dropped from rest. How fast is it going after it has been falling for 8.3 s? 
Physics
A rock is dropped from rest. How fast is it going after it has been falling for 8.3 s? 
physics
A speedboat increases in speed from 21 m/s to 30.9 m/s in a distance 191 m. Find the magnitude of its acceleration. 
Physics
) What is the minimum uncertainty in the velocity of an electron that is known to be somewhere between 0.050 nm and 0.10 nm from a proton? 
physics
What total capacitances can you make by connecting a 4.98 µF and 8.98 µF capacitor together? series ? parallel? 
PHYSICS
A car traveling at 17 m/s accelerates at 1.37 m/s2 for 12 seconds. To the nearest meter how far does it travel? 
Physics
What is the minimum uncertainty in the velocity of an electron that is known to be somewhere between 0.050 nm and 0.10 nm from a proton 
physics
what is the mass of a vehicle traveling at 25 km/hr with a kinetic energy equal to 1 x 10 to the 4th power J? 
PHYSICS
A girl rows 10 km downstream in 2 h. Her return trip takes 3 h. How fast is the current. in km/ 
Physics
An airplane with an airspeed of 50km/h lands on a runway where the wind speed is 30km/h . 
Physics
Determine the displacement of a plane that experiences uniform acceleration from 77 m/s to 110 m/s in 16 seconds. 
physics
Find the mass of 0°C ice that 10g of 100 °C steam will completely melt 
Physics!
How much impulse stops a 46kg carton sliding at 3.0m/s when it meets a rough surface? 
physics
A 60 kg of sprinter accelerates from rest at 2.5 m?s^2 East for 4s. What force is acting and what is the final speed? 
physics
If the electron experiences a force of 5.6 x 106 N, how large is the field between the deflection plates? 
Physics 1
If you see an object rotating, is there necessarily net torque acting on it? Explain 
Physics 1
What torque is needed to accelerate a 70Kg disk with a 20 cm radius from rest to 10 rad/s?