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The frequency of light emitted by a toaster is 2.5 GHz. How many toaster photons are required to heat the water
A muon travels 60 km through the atmosphere at a speed of 0.9995c. According to the muon, how thick is the atmosphere
In a certain particle accelerator, protons travel around a circular path of diameter D in an evacuated chamber, What is the mean free path of the gas molecules
A dog running in an open field has components of velocity vx = 2.4m/s and vy = -2.5m/s at time t1 = 11.3s . For the time interval from t1 = 11.3s to t2 = 18.0s , What is the magnitude of the dog'
A line of charge with uniform density of 32.0 nC/m lies along the line y = -15.0 cm, Find the electric field it creates at the origin
A student begins at rest and then walks north with an average speed of v1=0.85 m/s. What was the student's overall average velocity, in m/s, for the trip assuming the student spent equal times at spe
Two charges of equal magnitude exert an attractive force of 3.0×10-4 N on each other. how far apart are the charges
A car starts from the origin and is driven 1.1 km south and then 3.5 km in a direction 53° north of east. what is the car's final location
Consider a map oriented so that the x axis runs east-west (with east being the "positive" direction), find the direction of the total movement of the driver
A cube made of wood has sides 15.20 cm in length with an uncertainty of 0.05 cm. What is the final volume of the cube and its uncertainty
A tennis player standing 10.2 m from the net hits the ball at 3.60° above the horizontal. To clear the net, the ball must rise at least 0.322 m. how fast was the ball moving when it left the rac
The speed of light is 3 x 10^8 m/s. The sun is 93 million miles from earth. How many minutes does light take to reach the earth
A car is traveling along a straight road at a velocity of +27.6 m/s when its engine cuts out. For the next 1.40 seconds, Find the velocity of the car at the end of the initial 1.40-second interval
The quantity of charge q (in coulombs) that has passed through a surface of area 2.08 cm2 varies with time according to the equation q = 4t3 + 5t + 6, What is the value of the current density
The potenial energy for the force between two atoms in a diaomic molcules a-b has he approximate form v(x)= (-a/x^6 )+ (b/x^12), find the frequancy for small vibration
Two balloons (m = 0.028 kg) are separated by a distance of d = 0.9 m. They are released from rest and observed to have an acceleration of a = 1.9 m/s2 toward each other, How many electrons are respn
Suppose a block of mass 5 kg is resting on a horizontal surface and coefficient of static friction between block and surface is 0.2. What is the reaction on the block by the vertical wall
Since CO2 is a liquid at this pressure and temperature would it form rivers, lake or oceans of liquid CO2 mixed with liquid water or will it stay in a gaseous form because of its lower abundance of
A certain cable car is San Francisco can stop in 10 s when traveling at maximum speed. how far was the car from the dog
A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly over its surface. How many excess electrons does a typical red blood cell have
A 0.00275-kilogram air inflated balloon is given an excess negative charge, q1 = -3.50 × 10-8 C, by rubbing it with a blanket. what polarity of charge must the rod possess
It is observed that 59.6 mL of water at 18.6°C completely fills a container to the brim. What is the coefficient of volume expansion of the container
There are two identical, positively charged conducting spheres fixed in space. find the initial charge on each sphere
Two slits spaced 0.280mm apart are placed 0.640m from a screen and illuminated by coherent light with a wavelength of 680nm. What is the distance on the screen from the center of the central maximum
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, Determine the cheetah's average acceleration during the short sprint