73,661 results, page 58
Calculate the allowed wavelengths for the emission of a photon initially in the n=3 state in a hydrogen atom
A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?
A meteoroid is speeding through the atmosphere, traveling east at 15.5 km/s while descending at a rate of 10.6 km/s. What is its speed, in km/s?
An 80 kg skateboarder going 10 m / s is launched nearly vertically off a ramp as shown. Approximately how high does he go?
a fire hose held near the ground shoots water at a speed of 6.4m/s, at what angle should
Katie kicks a football at a 52 degree angle and a velocity of 31 m/s. At what times will it be 10 meters off the ground?
A aluminum wire has a diameter and uniform electric field of imposed along its entire length
A crate is given an initial speed of 5.0m/s up the 22.5∘ plane shown in (Figure 1) . Assume μk = 0.12.
You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope.
Determine Centripetal Acceleration acting on the person standing at the equator? (the radius of earth is given)
How fast will a roller coaster, with a mass of 1200 kg, be moving at the bottom of an 18 meter tall hill?
Explain how you would determine how much error there is between a vector addition and the real results.
How many kilocalories of heat are required to melt 20.0 kg of ice at 0°C? Okay so the given is m=20.0kg Ti=0°C HeatFusionIce=80 kcal/kg
Find the radius of a spherical asteroid that has a density of 4600 kg/m3 and an acceleration due to gravity of 0.11 m/s2 at the surface. km
How much heat (in kJ) will it take to bring 56 kg of ice at -8°C to dry steam? Answer to 3 significant figures
a 37.4-kg traffic light is supported by two wires prove you answer applying newtons law
Fall time under g is sqrt 2h/g. Can someone give a derivation from the equations of motion please? Thanks.
Which of the following is closer to a guess? hypothesis<<<<< law question theory
A ball strikes against the floor and returns with double velocity.In which type of collision is it possible?
How much force is required to accelerate a 1500kg car to a speed of 17m/s in a distance of 45m? Thank you.
a horse pull a barge with a force at an angle of 30¡ã to the horizontal for a distance of 20km . find the work done.
An ambulance is going away from me @ 40mph with a siren @ 1000Hz.Will I heat a higher or lower frequency
the potential difference across a load is 9V. explain what this means in more fundamental terms.
A 50 cm diameter wheel rotates through 25 radians. How do I figure out the amount of distance it will move?
Can the gravitational potential energy of a baseball ever be negative? Yes No Explain without using a formula.
A weight suspended from a spring is seen to bob up and down over a distance of 11 cm twice each second.
An object falls a distance h from rest. If it travels 0.45h in the last 1.00 s, find the time and the height of its fall.
would someone in a lift feel lighter or heavier as it accelerated upwards? explain your answer.
a tsunami originating in japan has a wavelength of 10^5 m and a period of 10 mins. how long does it take to travel 8000km?
What is the maximum total force exerted on a 71 kg astronaut by her seat during the launch of the Space Shuttle?
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?
Calculate the extension that would be produced by a 20N force if 15N extends a spring by 3cm
with what velocity must a ball be thrown in order to achieve the height of 50 ft.? and how long will it stay in the air?
Leroy, who has a mass of 72 kg, is skateboarding at 5.9 m/s when he smacks into a brick wall and comes to a dead stop in 0.2 s.
What is the relationship between the coefficient of friction and the time that it takes the object to reach the bottom of the ramp?
how much work is done by the upward force of your head on a 50 N rock that you carry horizontally across a 10 m room?
A construction crane's cable lifts a 49.5-kg box upward with an acceleration of 1.30 m/s2. Find the tension in the rope. N
A volleyball is served at an angle of 35 degrees with an initial speed of 5 m/s. What is the maximum height reached by the ball?
A football is kicked at an angle of 40 degrees with an initial speed of 7 m/s. What is the horizontal distance traveled by the ball?
What design aspects of the snowmobile make it particulary useful for travel over ice and snow?
a force of 10N acts on an object and raises its speed from 0 to 5 m/s in 10s.calcuate the average power.
In a uniform magnetic field, can an Amperian loop ever have a non-zero value
A wheel has turned through 120 revs in 10 s after starting. find the angular acceleration.
A solid of relative density 1.25 is found to weigh 12g in water find its weight in air
A dragster's top acceleration is 60m/s^2. If it accelerates for 3 seconds from the starting line, how fast will it be going?
a body projected with velocity 30m/s an angle 30¡ã with horizontal maximum height attained by he object is.........?
At 7.15 cents per kilowatt-hour, what does it cost to leave a 75.0W light burning 24.0 hours a day?
A 25HP electric motor turning a 1800 RPM will produce how many foot pounds of torque?
1. A cannon ball M = 10.0kg with V = 2.4×102m/s is broken into 2 parts, if m1 = 6.4kg with angle 37° and m2 with 53°, what is the magnitude of v1 and v2?
Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin
a cyclist moves around equilateral triangle6kn/h10km/h,12km/hfind average speed?
Determine the resulting temperature when 1kg of ice at 0 Degree celcius is mixed with 9kg of water.
A boy drops a mango from a tree it falls without rebound wat happens to its momentum
An arrow is shot horizontally with a speed of 20 m/s from the top of a tower 60 m high .The time to reach the ground will be???????
Steam of mass 11.0 g at 100°C is added to 126.7 g of ice at 0.00°C. Find the final temperature of the system.
Mechanical energy is the difference between the kinetic and potential energies of an object. true or false?
a person covers a distance of 31 km and displacement 3 kms and time 25.5 min calcuclate average velocity
What is the tension in a 1-meter string that is spinning a 0.5-kg rock in a horizontal circle 3 times per second?
You have a mass of 60 kg and run up some stairs that are 5 m high in 6 seconds. How much power did you produce?
'show that a 2.5m length of wire with cross section area 0f 1.0mm and resistance of 0.75ohms has a resistivity o f 3.0 ×10-7'
If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?
damon,reiny,steve,ms sue.plz get a solution 2 my question please itz urgent!!!
light from the sun travels 1.5x10km to reach the earth .how long does it journey take in minutes?
A bicycl rider starts from rest and moves with uniform acceration of 1.5m\s^2 it is velocity reachs 7.5m\s of a distance .......
A 2000-kg car starts from rest and gains a velocity of 20 m/s in 5 /0s. What force was applied on it? What formula/s will I use?!
From what height must water fall from a dam to strike the margine waves w/ a speed 30m/s.
what is the central acceleration of an automobile driving at 40 kph on a circular tracks having radius of 30m?
Calculate the centripetal force on a 2100 kg carrounding a curve of 175 m radius at a speed of 60 kph.
Results for: In An Ideal Transformer, The Voltage And Current Are 220V,2A And Those In Secondry Are 2000V, IA. The Value Of I Is?
How much heat is needed to convert 1.0kg ice at -5celsius to steam at 105 celsius?
Calculate the energy absorbed when 8.5g of ice is melted at 0 Celsius. thank you
What are three different kinds of automatic switching devices? What are the conditions that cause the on/off action of the switch?
compute for the density of a brake fluid used in a car which has a volume of 600cm^3 and a mass of 100 g?
Suppose the horizontal sweep of an oscilloscope takes 80ms how many cycles of a 100 Hz wave will be shown?
A race car moving at 35 m/s is uniformly slowed to a stop in 50 s. Find 1) acceleration, and 2) stopping distance.
What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart.
Power applied to a particle varies with time as P=(3t^2-2t+1)W. Find the change in kinetic energy between t=1s and 4s.
An object initially at rest experiences an acceleration of 9.8 m/s^2. How much time will it take to achieve a velocity of 58 m/s?
a body travels from rest with acceleration 8ms find its velocity when it has covered a distance of 100m
What is the minimum work needed to push a 1025 kg car 290 m up a 17.5° incline with zero friction?
mike is skiing downhill at a 25 degree angle. if his weight is 350N assuming there is no friction what is his acceleration
TWO FORCES F1 AND F2 ARE ACTING AT RIGHT ANGLE TO EACH OTHER FIND THE EXPRESSION FOR THE RESULTANT FORCE?
a 4200 kg helicopter accelerate upward 3m/s^2. lift force is exerted by the air on the propellers?(g=10m/s^2)
How fast must a plane fly at a latitude of 41.9° so that the sun stands still relative to the passengers?
How many coulombs pass through a wire that carries a current of 3.2 A for 5.0 h? I=Q/t Q=It Q=3.2*5*60 Q=960 I am told this is not the correct answer.
What would be the average velocity of an object falling 1.25m from the rest, just as it strikes the ground?
an object takes 0.35 seconds to hit the floor, what height did it fall from? is the way to calculate it h = gt^2 / 2 so would it be = h = .5 * 9.8 * 0.35^2
Wat direction will the Electric Field Lines be in a parallel plate capacitor containing a dielectric ?
2)if a curved of radius 50m is banked at 30 degree will a car travelling at 60 km/hr along the curve will safe?
A stone is projected vertically upward with a speed of 20 m/s. a. What is its velocity at the end of 2s? b. What is the height reacted after 2s?
Calculate the speed with which a swimmer enters water if she slides down a frictionless ramp that is 2.6 m high
How long it takes a car at 20m/s to come to a stop without friction, obstacles, or breaks ?
Find the range at an arrow that leaves a bow at 45 m/s at an angle of 50 degrees above the horizontal level.
What is the magnitude of the momentum of the 0.057-kg tennis ball when it travels at a speed of 29 m/s? Earth is the frame of reference.
calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v
calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v
A ball is thrown vertically upward with a velocity of 30m/s. Determine the maximum height reached
What is the total time of flight of an object projected vertically upwards with a speed of 30m/s? (g=10m/s^2
When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........
Why can't most objects like an apple travel at speeds above the speed of light?