208,687 results, page 31
what will be the young's modulus of copper wire pf length 0.15 m and radius 0.2 cm
Which best explains why openness is important to the progress of science?
How far does water travel if you restrict the hose opening by 80%
Why the blood pressre in human greater at the feet than in the brain?
How many joules of energy are required to melt 80g of silver.
What is the acceleration (in m/s^2) of a vehicle that changes its velocity from 85 km/h to a dead stop in 13 s?
The ratio of velocities of sound in hydrogen and oxygen at stp is???
what is the northwest and eastward components of a 550 kph velocity?
a plane travelling at 200.0m/s braked to a stop in 6.2s. what was its acceleration?
What is the change in velocity (in m/s) if an impulse of 225 N acts on a 4.5 kg mass for 3.0 s?
Why are cars made with bumpers that can be pushed in during a crash?
Vector B~ has x, y, and z components of 9.6, 6, and 8.5 units, respectively. Calculate the magnitude of B~ .
what is the pressure on the bottom of an aquarium 0.3 m deep filled with water
Calculate the energy absorbed when 8.5g of ice is melted at 0 celsius
What effect does the normal force have on the coefficients of friction?
Write down the ORDER OF MAGNITUDE for the numbers given: a)4.72*10^-7 b)8.65*10^4 C)7.59*10^-5
What is the torque produced by a force of 40N j applied at the point 2 m i - 5 m j + 3 m k?
what do you think will happen if a blackhole and a whitehole are close to each other
If 7.20 kg of ice at -5.00°C is added to 12.0 kg of water at 30°C, compute the final temperature.
Three vectors A,B and C have the following x and y components Ax = 3.6, Ay=-3.4; Bx=-5.5, By=1.9; Cx=2.5, Cy=3.4 What is the magnitude of A+B+C?
Find the pressure at the bottom of a swimming pool that is 1.1 m deep.
what is the acceleration of a car going 25m/s on a cloverleaf with a radius of 45 m?
Calculate the Specific Gravity of an object that sinks in water if m = 21.97 g and mA = 17.40 g.
If I use 1.013x10^5 instead of given 101kpa....is it wrong?
Why we have to know refractive index and can use this in normal life?
What will be apparent length of a rod 1m long moving with 0.7c
At a distance of 2.0 m. from a +8.0 x 10^-6 C charge, the magnitude and direction of the electric field will be?
is electric field intensity the same as potential difference?
Show that the function y(x,t) = X^2+V^2t^2 is a solution of the general wave equation.
Do the mass of a body determine the gravity they possess(sun)
find a unit vector parallel to the resultant of vectors : A=2i^+j^-k^& B=3i^-2j^+2k^
Why are electrons allowed to fall on a crystal plate for diffraction ?
The circuit has two resistors? V= 22V R= 27 Komega R=? I= 12mA
three resistors are connected in parallel R1=10, R2=50, R3=25.what is the equivalent resistance
An astronaut has a mass of 60kg.what is her weight here on earth
a car starts from rest and accelerates at 6m/s^2.how far does it travel in 3s?
How does a vaccum flask minimize heat change with surrounding
An electric field with constant magnitude and direction is said to be?
What are the charges on and the potential difference across each capacitor in the figure if V = 13.2 V?
A man walks 3km E and then 4km N. What is his resultant displacement?
What is the frequency of a blue light with a wavelength of 487nm?
what is the heat capacity of a gold ring that has a mass of 7.00g
prove that I=square root of (I^2avarage). using I=Iosin(wt)
A streetlight hanging above a road has what type of engrgy?
Which idea did Isaac Newton’s experiments with light support?
For what values of "a" and "b"will the vectors 2i^_3j^_k^ and ai^+bj^_2k^ be parallel to each other?
A Car Of Mass 280kg Moving With A Velocity Of 30m/s
Calculate the λSWL for molybdenum, when the accelerating potential is 15 kV
Mass=2.20 T=10 Friction=0.400 Determine the acceleration when x=0.400m
you are moving at 12m/s towards a mirror,what is the speed of your image?
How do you determine the mass of fuel in a semi truck?
Write 2.38x10 to the 6th power in standard notation
How far does a runner travel if they maintain a speed of 8.5 m/s for 240 s?
Does drift velocity depend upon the area of conductor?
What is the kinetic energy of a 15 kg dog that is running at a speed of 8.7 m/s (about 19 mi/h)?
What is the acceleration of a 10-N freely falling object with no air resistance?
Joseph drives his car 10 km [E20 °S] then 25 km[N]. What is his total displacement?
Determine the relative density of a regular shaped object
When 20 kJ of heat is removed from 1.2 kg of ice originally at -15 C, what is the new temperature?
Determine the mass of the earth from the known period and the distance of the moon
What is the rotational speed of the hour hand on a clock? -----rev/s
What is the rotational speed of the hour hand on a clock? -----rev/s
What is the period (in seconds) of a simple pendulum 62.0 cm. long, on the earth?
Hi, do you know how angular velocity relates to a "tight spiral" in football?
State the factors that affect the speed and the rotation of the motor
Describe a vibration that is not periodic. I'm not sure how to answer this! Please help?!
How long does it take for sound to travel around the world ?
determine the velocity of a charge that push by the 16 volts source
a body of mass 2 kg moving with a speed of 10 m/s find its momentum
Why the household appliances starts / runs as soon as we switch them on
describe the shape of the graph made and discuss its significance.
Is the motion of the rider for each angle of inclination uniformly accelerated? Why or why not?
A coil of wire has a resistance of 31.8Ω at 28 °C and 55.6Ω at 53 °C. What is the temperature coefficient of resistivity?
How much positive and negative charge is there in a cup of water
Calculate the commutator [ p, e^ik.x ] where the function e^ik.x may be expanded as: e^ik.x = ∑infinite,n=0 (ik.x^n/n!)
from newton's second law of motion derive the formulae F=ma
What is the energy of a photon of yellow light with a frequency of 5.14 Ã— 1014 Hz?
What does it mean when the position vs. time graph is below the x-axis?
What is the polar notation for a vector that points from the origin to the point (0,5.00) ?
if the velocity of wave is 0.15m/s and the frequency is 20Hz, what is the wavelength?
Name five distinct disciplines of physical sciences
Find analytically the resultant of the forces shown below: Where: F1 = 20 kg (4,4) F2 = 15 kg (-5,5) F3 = 5 kg (-2,-2) F4 = 10 kg (3,-3)
What is the pressure on a swimmer 10meters below the surface of a lake?
What is the acceleration due to gravity 'g' on the moon if 'g' is 10m/s² on the earth?
The resultant force of 10N acting at the right angle to another of RN is?
How is time peroid the reciprocal of frequency? Plz explain
What does r'squared' means in coloumb law equation.why is it r^2 istead of r?
why do you fall forward when a moving bus decelerates to a stop ?
Explain the term uniform acceleration and average speed
The resultant of two forces X and Y will be the greatest when the angle between X and Y is:
About 10% of the population of a large country is math phobic. If two people are randomly selected what is the probability both are math phobic? And hat is the probability that at least one is math phobic? Any way to do this on stat crunch?
Hi I did a physics lab where we hung one spring with several different masses and found its K value, then hung another spring with several different masses and found its K value, then we joined both the springs together and hung several masses on it, and then found the K value...
In one region the number of students in Math 101 is 20% more than the number of students in Math 123. If there are 480 students in Math 101, how many students are in Math 123?
The National Association for Women in Science asked recent high school grads if they had taken certain science classes. Of those surveyed, 32 said they had taken physics, 51 said they had taken chemistry and 15 said they had taken both. Ten said they had taken neither. How ...
The National Association for Women in Science asked recent high school grads if they had taken certain science classes. Of those surveyed, 23 said they had taken physics, 47 said they had taken chemistry and 5 said they had taken both. Seven said they had taken neither. How ...
light travels from ethanol intro crown glass. what's the brewster angle in this situation? illustrate your answer with a light ray diagram. what's the signifcance of this angle of incidence? n1=1.36for ethanol nR=1.52 for crown glass tanangleB=nR/ni =1.52/1.36 =1.12 (48.2 ...
I'm having a really hard time with this physics problem...not really sure where to begin or which equation to use....please help: You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 ...
16.Eliot spent 24 minutes solving 8 math problems.At that rate, how many math problems can he solve in 54 minutes? a.12 B.16 C.18 D.24 A? Can you explain why it isnt a
A sphere of mass 2.7 x 10^-4 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 41 degrees with the vertical. Find the magnitude of the push provided by the breeze and Find the tension in the cord. you have a ...
Can somebody help me out here. I want to know why I am good with math problems but I don't get word problems until it is made out of a equation. The reason is that you have learned math as procedures and facts...math as a form of thinking, or analysis, hasn't sunk into your ...