Math/Physics
214,834 results, page 66

Physics
Find the slope of the line that is tangent to the given function’s graph for the specified value of the independent variable. f(x) = 9x – 8; x=10. 
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
sketch a postion time graph for a student walking east with a constant velocity how would that look 
Physics
How fast must a truck travel to stay beneath an airplane that is moving 139km/hr at an angle of 25° to the ground? 
Physics
If the Kitty Hawk Flyer has 12 HP how would you express this power in the SI system and report the numerical value in kilowatts? 
physics
How will the weight of a 20kg object change if it was in a lift that accelerates downward at 4 meters per second squared? 
physics
What is the required resistance of an immersion heater that will increase the temperature of 2.00 kg of water from 10.0°C to 50.0°C in 9.0 min while operating at 120 V? 
College Physics
What will a spring scale read for the weight of a 73 kg woman in an elevator that moves upward with constant speed of 5.4 m/s? 
physics
How long will it take a 230 W motor to lift a 335 kg piano to a sixthstory window 19.0 m above? 
11th grade Physics
What happens when an insulator is wired in series with the bulb? Is trhe swich open or closed? 
physics
Explain the interference due to thin flims and ahows that the reflected and transmitted systems are complementary to each other. 
11th grade Physics
What is the current produced by a potential difference of 240 volts through a resistance of 0.2 ohms? 
11th grade Physics
What voltage is necessary to produce a current of 200 amperes through a resistance of 1 x 10^3 ohms? 
physics
What is the gravitational potential energy of a 300.0 g coffee cup sitting on a table top 1.25 m above the floor? 
PHYSICS Gr.11
i am completely confued :( what are balanced and unbalanced forces? How can u tell by looking at a free body diagram and/or a problem? thanks 
Physics
A centrifuge has a rotational inertia of 6.0 103 kg · m2. How much energy must be supplied to bring it from rest to 420 rad/s? 
physics
If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 63 cm*29 cm*20cm, what would its mass be? 
general physics
If wind blows at 30 m/s over a house, what is the net force on the roof if its area is 300 m^2 and is flat? 
physics
what would be the significance of the photoelectric effect graph if it a) passed through the origin b) had a positive y intercept 
PHYSICS
TWO WEIGHTS ARE ATTACHED TO BOTH ENDS OF A WIRE AND SLIDED ON A BLOCK OF ICE.INVESTIGATE THIS PHENOMENON? 
Physics
What is the frequency shift of a 79 GHz police radar signal when it reflects off a car moving at 110km/h ? 
physics (electric charges)
Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :) 
physics (electric charges)
Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :) 
college physics
Estimate the rotational kinetic energy of Earth, assuming it to be a solid sphere of uniform density. 
physics
how old would you be, when you returned from a trip while traveling at 99.5% C if your relatives that stayed at home, were 10 years older? 
physics
An elevator weighting 2500 N ascends at a constant speed of 8 m/s. How much power must the motor supply to do this? 
Physics
Describe alpha, beta, and gamma rays. What exactly is each ray composed of? What are their characteristic radiation characteristics? 
physics
find the total momentum of electrons in a straight wire of lenght 1000m carrying a current of 70A. 
College physics
You have a collection of six 1.0 kilo ohm resistors. what is the smallest resistance you can make by combining them 
Physics
Two objects are moving in different direction. Under what circumstances can you treat this as onedimensional problem? 
Physics
How much energy is need to place four positive charges, each of magnitude +5.0 mC, at the vertices of a square of side 2.5 cm? 
Physics
How much energy is need to place four positive charges, each of magnitude +5.0 mC, at the vertices of a square of side 2.5 cm? 
physics
Is the acceleration due to gravity more or less atop Mt. Everest than at sea level? Defend your answer. 
Physics
In a gas kept at a constant temperature, all molecules move with the same speed. True or false? 
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
A boy sledding down a hill accelerates at 2.00 m/s2. If he started from rest, in what distance would he reach a speed of 5.20 m/s? 
Physics
A golf ball is chipped at an angle of 37 degrees and with a speed of 13.5 m/s. How far does it travel to the nearest tenth of a meter? 
physics
how long does it take a softball to cross homeplate at 43 feet if the ball is going 65 miles per hour? 
Physics
A student travels 6.0 m [E] in 3.0 s and then 10.0 m [N] in 4.0 s. Draw a vector diagram to determine the resultant displacement. Q: How do you know where the starting point is on the graph? 
physics
a pendulum of length L=9.8m hangs in equilibrium and is given velocoity v=0.2m/s at its lowest point.What is the magnitude of the subsequent oscillation? 
Physics
h t t p : / / b i t . l y / 9 S F F F o a) What is the minimum value of F needed to move the two blocks? b) If the force is 10% greater than your answer for (a), what is the acceleration of each block? 
Physics
h t t p : / / b i t . l y / 9 S F F F o a) What is the minimum value of F needed to move the two blocks? b) If the force is 10% greater than your answer for (a), what is the acceleration of each block? 
physics
a pendulum of length L=9.8m hangs in equilibrium and is then given velocity v=0.2m/s at its lowest point.What is the magnitude of the subsequent oscillation? 
physics
how long do waves of frequency 7 hz and wavelength 5cm take to travel across a pool breadth 3.5 metres 
physics
An athlete executing a long jumper leaves the ground at a 27.0 degree angle and travels 7.89 m. What was the takeoff speed? 
physics
what is your age in seconds? this is a conversion problem. someone help please with all the multiplication and division... very confused. THANK YOU 
physics
what is the shortest possible time in which a bacterium could travel a distanceof 8.4 cm across a petri dish at a constant speed of 3.5 mm/s 
physics
The pendulum swings past the pole 14 times in 21 seconds. The weight of the bob is 10g. Calculate the period? 
physics
A 1600 kg car traveling at a speed of 31 m/s skids to a halt on wet concrete where uk = 0.60. how long are the skid marks? 
physics
A train is traveling up a 3.6 incline at a speed of 3.30 when the last car breaks free and begins to coast without friction. 
physics
How long will it take an 850 kg car with 40 hp (horsepower) to reach the speed of 15 m/2, neglecting friction? 40 hp=29840 watts I know P=W/t but what is W? 
physics
If a person does 80 J of work in moving a 30 \rm{kg} box over a 13 m distance on a horizontal surface, what is the minimum force required? 
Physics
a 10kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight....the angle and normal force 
Physics
a 10kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight....the angle and normal force 
Physics
a 10kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight....the angle and normal force 
Physics
is it true or false the monochromatic light has photons of different energies? PLZ DNT 4GET 2 XPLAIN IT 
physics
A car traveling at 7.3 m/s accelerates 4.5 m/s2 to reach a speed of 11.0 m/s. How long does it take for this acceleration to occur? Answer in units of s. 
Physics
A child slides down a hill on a toboggan with an acceleration of 1.5 m/s squared. If she starts at rest, how far has she traveled in 1.0 s, 2.0 s, and 3.0 s? 
physics
A longjumper running at 12 m/s and jumps at 20 degrees. No wind or resistance but gravity is normal 9.81 m/s2. How far will person jump? 
Physics
A soccer player launches a ball at an angle of 40 degrees, with an initial velocity of 23 m/s. What are the horizantal and vertical for this problem?? 
physics
A 4600 kg helicopter accelerates upward at 2.26 m/s2. 2 The acceleration of gravity is 9.8 m/s . What lift force is exerted by the air on the propellers? 
physics
A 4600 kg helicopter accelerates upward at 2.26 m/s2. 2 The acceleration of gravity is 9.8 m/s . What lift force is exerted by the air on the propellers? 
physics
A large boulder is ejected vertically upward from a volcano with an initial speed of 41.0 . Air resistance may be ignored. 
physics
A boy sledding down a hill accelerates at 1.30 m/s2. If he started from rest, in what distance would he reach a speed of 8.00 m/s? 
physics
A satellite orbits at an average altitude of h = 409 km. What is its orbital speed? Use REarth = 6370 km and mEarth = 5.98 x 10^24 kg 
physics
What minimum speed does a 150 g puck need to make it to the top of a 5.90 mlong, 21.0 degree frictionless ramp? 
Physics
If 500 grams of a metal requires 70 calories of energy to raise its temperature by 10 Kelvin, what is its specific heat? 
Physics
Calculate the earth's orbital angular speed in radians/sec due to its motion around th sun. 
physics
Find the angular speed of the Earth as it spins about its axis. Give your result in rad/ses 
Physics
Is momentum conserved when a cannon is rigidly mounted to the deck of a large boat and subsequently fired. What will happen and why? 
Physics
A car traveling initially at 7.49 m/s acceler ates at the rate of 0.743 m/s2 for 5.41 s. What is its velocity at the end of the accel eration? 
physics
A person has a mass of 50.0 kg. What is the pressure they exert on the blades of their ice skates if each skate blade is 15.0 cm long and 5.00 mm wide? 
physics
You should expect concrete to have an elastic constant that is _____ than wood. a. larger than b. smaller than c. equal to 
Physics
Does an object moving in a circle obey the law of inertia? Which way would it move if there were no net force on it? 
physics
A truck increases its speed from 8 m/s to 28 m/s over a distance of 120 m? How long does this take? Assume that the acceleration is constant 
Physics
Use the Second law of thermodynamics to explain why an ice cube cools off your warm soda. 
PHYSICS
What is the reaction effect of the following action effects? a) Earth orbits the sun b) Ball accelerates downward Thank YOu. 
PHYSICS
What is the reaction effect of the following action effects? a) Earth orbits the sun b) Ball accelerates downward Thank YOu. 
Physics
What is the gravitational force between the proton (1.67X10^27 kg) and the electron (9.11X 10^31 kg) in a hydrogen atom if they are 3.00X10^10 m apart? 
Physics
i have to build a enery effiecient vehicle for class and do a opapp paper and i need help im so confused.... any ideas? 
physics
A bird is flying from the ground to the top of a tree at 5 m/s at an angle of 24 degrees. What are the horizontal and vertical components of this velocity? 
physics
What is the longest wavelength for standing sound waves in a 102.0 cm long tube that is open at both ends? 
Physics: Waves in Media
By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6? 
physics
The displacement from the equilibrium caused by a wave on a string is given by: y(x, t) = (0.00200 m) sin [40 m1)x – (800 s1)t]. What are the number of waves in 1 m 
physics
The pulley in Figure P8.59 has a moment of inertia of 7.0 kg·m2 and a radius of 0.50 m. The cord supporting the masses m1 and m2 does not slip, and the axle is frictionless. 
physics
as an object is dropped from a high cliff, which of the following statistics can be made in regard to the objects potential energy? 
Physics
The frequency of an electon orbiting a nyclear is 1000000000 cps and the radius is 5 * 10 to the 12m. Find the velocity of the electron. 
Physics
Could a simple machine such as a lever, a pulley system or a hydraulic jack be considered a heat engine? 
physics 11
a small 900kg sports car can deliver 100Hp to the pavement. how quickly can it reach 30m/s from rest? 
Physics Honnors
A 15 kg block of wood is sitting on a 1.5 meter high shelf. Calculate its gravitational potential energy 
Physics
A block weighing 9.7 N requires a force of 2.6 N to push it along at constant velocity. What is the coefficient of friction for the surface? 
Physics
An unbalanced forced of 2.5x10^3N is applied to an object with a weight of 3.0x10^3N on a frictionless surface. What is the objects acceleration? 
Physics
An object is dropped from rest. What is its instantaneous speed when it has been in motion for 5 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s 
physics
What is the net force on a Mercedes convertible traveling along a straight road at a steady speed of 100km/h? 
physics
What is the force required to move a 22kg ccrate up an incline of 35 degrees, if the coefficient between the two surfaces is .30? 
physics
A block weighing 6.8 N requires a force of 2.9 N to push it along at constant velocity. What is the coefficient of friction for the surface? 
Physics
What is gravitational force of a 65kg person that is on the surface of the moon has a mass of 7.348 x 10^22kg and radius of 1731km? 
physics
the mathematical form of the thinlens equation predicts that a graph of 1/p vs 1/q should have a slope of 1, explain? 
physics
a 5kg suitcase slides 2m down a frictionless ramp incline at 45 degress. How fast is it going at the bottom? 
physics
The boats have a mass of 30 kg. The stopping splash lasted about 1.5 s. What acceleration is required to stop the flume?