Math/Physics
215,206 results, page 67

Physics
A long jumper leaves the ground at an angle of 24.3◦ to the horizontal and at a speed of 10.6 m/s. How far does he jump? 
PhysicsPlease help
Could someone remind me how to calculate this on the TI84 Calculator: Which buttons do I hit for this: 3 * 10^8/5.4 * 10^14 I'm inputting it and coming up with 5.55 E 21 It should come out to be 5.55 *10^7 but I'm not doing the input correct Please help 
Physics
A Brass rod 50.0 cm long expands 0.0734 cm when heated. Find the temperature change. 
Physics
find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed 
Physics
Does the voltage output increase when a generator is made to spin faster? Defend your answer. 
physics
Find the acceleration of the two blocks sliding down the incline in the figure below. (Take m1 = 1.1 kg and m2 = 1.8 kg. Indicate the direction with the sign of your answer 
Physics
What is the mass of water in a closed room 5.2m x 6.3m x 2.5m when the temperature is 24 degrees celsius and the relative humidity is 65%? 
physics
a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s 
physics
five joules of work are needed to shift .5 c of charge from one place to another. the potential differences between the places is 
Physics
What hanging mass will stretch a 1.9mlong, 0.54mm  diameter steel wire by 1.2mm ? 
PREAP Physics
From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100 km/hr? 
physics
If an armadillo can leap to 0.5m height, how fast must he be moving vertically when his feet just lift off the pavement? 
Physics
A student photographs a 18cm flower so it fills half of a 24mm slide. What is the magnification? 
physics
A car travels in a straight line for 2.8 h at a constant speed of 53 km/h . What is its acceleration? Answer in units of m/s 2 
physics
State the surface powers required to produce the following lenses with +6.25D front curves. a. 0.50 DS b. +0.50 DS c. +1.75 DS 
Physics
With what maximum speed can an unsecured passenger stay in their seat on a Ferris wheel that has a diameter of 12 m. 
physics
calculate the work done on n mole of a vander waal gas is an isothermal expansion from volume vi to vf. 
college physics
a bus that is traveling at 30.0km/h speeds up at a constant rate of 3.5m/s2. what velocity does it reach 6.8s later? 
physics
An airplane lands and starts down the runway at a southwest velocity of 48 m/s. What constant acceleration allows it to come to a stop in 1.5 km? 
physics
List four effects that can be observed that demonstrate light travels in straight lines. Does anybody know the answer?? 
Physics
I don't understand how to do this : A force of 40 N accelerates a 7.17 kg block at 6.0 m/s2 along a horizontal surface. Determine the normal. 
physics
A yoyo of radius 10 cm and mass 1 kg is dropped from rest. What is the instantaneous torque on the yoyo if I hold the string with my fingers? 
physics
what is the acceleration due to gravity at a distance of 2 earth radii abouve earths surface? 
Physics
You throw a ball downward from a window at a speed of 2.7 m/s. How fast will it be moving when it hits the sidewalk 2.9 m below? 
physics
a plane travels 5.0 x 10^2 while being accelerated uniformly from rest at the rate of 5.0 m/s. what final velocity does it attain? 
physics
What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is .90 
Physics
A 27.59 kg child is on a swing that hangs from 2.26mlong chains. What is her maximum speed if she swings out a 48° angle? 
Physics
A dynamics cart m1 attached to has a hanging mass m2 m1 = 0.20 kg, and m2 = 1.3 kg. The magnitude of the acceleration of this system will be what approximately? 
physics
hummingbirds beat their wings 1500 times in 30seconds calculate frequency and the period 
physics
What should be the minimum initial velocity with which a missile has to be launched so that it reaches a target of 1000km away in the same plane 
Physics
A boy sledding down a hill accelerates at 1.65 m/s2. If he started from rest, in what distance would he reach a speed of 7.30 m/s? 
physics
What frequency would you need to produce a sound wave in roomtemperature air with a wavelength of 9 m? the answer in Hz 
Physics
Determine Centripetal Acceleration acting on the person standing at the equator? (the radius of earth is given) 
physics
For which of these will the buoyant force be the same as its weight when placed in water? A) A match stick.B) All of these.C) A small rock.D) None of these.E) A nail. 
physics
a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s 
physics
Show that the acceleration is 7.5 m/s2 for a ball that starts from rest and rolls down a ramp and gains a speed of 30 m/s in 4 s 
physics
a 747 airliner reaches its takeoff speed of 170 in 35.0 .what is the magnitude of its average acceleration 
physics
two equal vectors of magnitude 2A are inclime perpendicular to each other find the resultant and direction of vector. 
physcal science/physics
what is the kinetic energy in joules of a 1000 kg car travelling at 90km/h 
Physics
You throw a ball downward from a window at a speed of 1.8 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below? 
physics
What happens to a path of a light ray parallel to the principal axis, after it passes through a converging lens? 
physics
Forces of 4.57 N and 4.74 N act at right angles on a reddishgreen block of mass 5.76 kg. How much acceleration occurs? 
Physics
What is the gravitational force between a proton and an electron in a hydrogen atom if they are separated by distance of 5.29x10^9 cm. 
Physics
A student walks from her apartment a distance d=139m to the bus stop at a speed of v1= 1.40m/s. 
physics
find the force of a toy jeep if the mass is 50kg and is traveling at 4 m/s and the radius is 50 centimeter 
PHYSICS
Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet. 
Physics
A car accelerates uniformly from rest at 3m/s(square).What is its velocity after travelling a distance of 24m? 
physics
A rock is dropped from a height of 2 meters into a freshwater pond. What is the medium of the wave created? 
Physics.
when an e and a positron collide they're annihlated and their mass converts to engery. the energy released is? [1.64x10^13 J] 
conceptional physics
If a 35cm radius tire spins at a rate of 72 rad/s what is the rotating speed? 
physics
What is the radius of an automobile tire that makes a complete turn in 0.1 sec and has a linear speed of 24.0 m/s? 
Physics
State the reason why a steel sphere resting on a horizontal surface is said to be in neutral equilibrium. 
physics
Calculate the work done if a force of 300N Is applied at 30° to the horinzontal and body moves 20m 
physics
The grid in a highvacuume triode is usually kept negatively charged with respect to the cathode so that the electrons may be 
PHYSICS
a constant force of 6.00N acts on a 3.00kg object for 10.0s. what are the changes in the objects momentum and velocity? 
Physics
You can run 8.0 m/s , 20% faster than your brother. How much head start should you give him in order to have a tie race over 90 m ? 
Physics
If a force of 15.0 N directed east acts on a stationary 5.00 kg mass, what are its acceleration, displacement, and velocity after 10.0 s? 
Physics
What is the de Brogile wavelength of an electon that strikes the back of the face of a TV screen at 1/10 the speed of light? 
PHYSICS
A point source of a wave emits 195 watts. What is the intensity at a distance of 4.56 meters? I = 
Physics
Two ants race across a table 65 cm long. One travels at 5.76 cm/s and the other at 3.99999 cm/s. When the first one crosses the finish line, how far behind is the second one? 
physics
A mass of 1kg is placed at 1m,2m,0.Another mere of 2kg is placed at 3m,4m,0.Find moment of inertia of both the ladder about zaxis 
physics
the period of revolution of a satellite is 90 min. Find the radius of the orbit assuming an acceleration of 9.8 m/s/s. 
Physics
What is the frequency of an EM wave emitted most strongly by a glowing element on a stove with temperature 1500 K? 
physics
Why does the pitch of the sound produce by blowing over an open end of a bottle change when you have more water in it? 
Basic Physics
If a swimming pool has dimensions; 28.2 5m x 10.0m x 2.30m, when it is full of water, what is the force on the bottom ? 
physics
find the revolutions of a bicycle wheel of diameter 0.8m when the bike goes a distance of 25m down the street. 
physics
A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s? 
physics
a person throws a ball upward into the air with an initial velocity of 20.0 m/s, calculate how high it goes 
physics
A motorcyclist increases her speed along a straight road from 0 to 120 km/hr in 5 seconds. How much acceleration does she experience 
physics
Suppore the ceiling in the previous problem is that of an elevator which is going up with an acceleration of 2.0 m/s square. Find the elongations. 
Physics
Two spherical objects with a mass of 7.60 kg each are placed at a distance of 2.93 m apart. How many electrons need to leave each object so that the net force between them becomes zero? 
Physics
To what potential a sphere of radius 10cm be charged so that the surface density of charge is equal to 1 
physics
a bus decreases its speed from 80kmh1to 60kmh1 in 5 sec find the acceleration 
Physics
a boat sails 150km N60°E, then 100km West. What is it's displacement from its starting point? 
physics
Is the acceleration due to gravity more or less atop Mt. Everest than at sea level? Defend your answer. 
physics
Calculate the force of gravity on a spacecraft 12800 km above the earth's surface if its mass is 700 kg. 
Physics
A football is kicked at 15 m/s with an angle of 35 degrees with the ground. How long is it in the air? How far will it land? Can someone help plz... Thanks! 
physics question
find the force exerted by proton and the electron in a hydrogen atom they are 5.0 X 10^19 coulomb 
Physics
Calculate the energy evolved when 8 droplets of water of radius 1/2mm each combine into one where s=0.072N/m. 
ap physics
a 37.4kg traffic light is supported by two wires prove you answer applying newtons law 
physics
A stone is thrown straight up. To reach a height of 6.74 m above its release point, what must its initial speed be in m/s 
Physics
is it right that ideal gas only obey the boyles law under high temp and low pressure? 
Physics
How does the idea of magnetic fields arising from circulating currents relate to permanent magnets? 
Physics
If a force of 15.0 N directed east acts on a stationary 5.00 kg mass, what are its acceleration, displacement, and velocity after 10.0 s? 
physics
How can you easily increase the magnetic field strength inside a currentcarrying coil? 
Physics
Find the electric potential at the centre of the square of side 1m at the four corners of charges of q1, q2,q3,and q4 are placed having values 3×10^8C,3×10^8C,5×10^8C and 6×10^8C respectively. 
physics
a 200kg body raised to a height of 10m. what is the gravitational potential energy of the system? 
Physics
Initial velocity is 21 m/s, the angle is 40 degrees, 20 meters away from the wall. How long is the ball in the air for? 
physics
at highway speeds, a particular automobile is capable of an acceleration of about 2.6 m/s^2. at this rate, how long does it take to accelerate from 60 km/h to 110 km/h? 
Physics
What is the final velocity of a hoop that rolls without slipping down a 5.00mhigh hill, starting from rest? 
Physics
On a bright sunny day, the irradiance on the surface of the ocean is 1.6*10^17 photons cm^2 s^1. If k=0.02 m^1 a)How much light is left at 15 m? b)at 75 m? 
Physics
a truck is traveling in a straight line goes 60km in 83minutes. what is its average speed in km per hour? 
PHYSICS
two forces of magnitude 8N making an angle of 30 and 120 with xaxis . the y component of resultant A/ O B/ 4N C/ 8N D/ 16N 
Physics
How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs? 
Physics
What is the gravitational force between a proton and an electron in a hydrogen atom if they are separated by a distance of 5.29x10^9 cm 
Physics
1. Could a horizontal axis of rotation be used satisfactorily in an experiment uniform circular motion? Explain 
physics
If you dropped the ball, cylinder and the ring at the same time from a height of 6.35 cm, in what order would the hit the ground? 
Physics
Two objects of masses m1 and m2 fall from the height respectively. The ratio of the magnitude of their momenta when they hit the ground? 
Physics
Let F1=10i15j20k,F2=6i+8j12k. Find their dot product and the angle between those two vectors 
Physics
a bb gun has a muzzle velocity of 325 ft/sec. How long will it take the bb to hit the ground? How far will the bb travel?