Just where scientist should be to rate speed

Just where scientist should be to rate speed

Ive tried every equation an I still cant get the answer

A rocket with a total mass of 40 t (including fuel) rises vertically from rest. 30 kg of exhaust comes out of the engine every second at a speed of 6.0*10^3 m/s for 40 s before the fuel runs out....

a snowball is thrown with an initial velocity of 20 m/s at an angle of 60 degrees with the horizontal. Will it clear the top of the 3-meter taller wall of the snow fort 34m away?

The figure below shows a roller coaster. The 500 kg carriage is pulled up the first incline from ground level at A to the first peak at B. From here it then rolls freely from rest under the influence...

A fire hose directs a stream of water against the north wall of a house. The stream is directed southwards and the stream has a speed of 16 m/s. If the water comes out of the hose at rate of 27 kg/s,...

Find the current I1 in the 0.7 Ω resistor at the bottom of the circuit between the two power supplies. Answer in units of A. Picture of diagram at http://i1085.photobucket...

A small cart rolls freely along the floor. As it rolls, balls of clay, each having one-seventh the mass of the cart, are dropped straight down onto the cart and stick to it. What is the...

when do I use the absolute value brackets on the point charge? E = k (q)/r^2 vs E = k |q|/r^2 ?

A U-shaped tube , one of its branches is double the other in area , the length of each branch is 66 cm. ,if it is filled with water to its half , then oil is poured in the wide branch. Calculate the...

A U-shaped tube , one of its branches is double the other in area , the length of each branch is 66 cm. ,if it is filled with water to its half , then oil is poured in the wide branch. Calculate the...

According to Keplers third law, but because of gravitational differences due to a second source, the orbital period T of a planet in this solar system is related to the radius R of its orbit.by T4...

you can connect a car heater to the car of a power 2,0kw to a 230V power outlet in the garage if the socket is protected by a 10 A fuse? only responses are not accepted

Determine the average of this 42.2km race. Express your answe in both m/s and km/h. ans.(3m/s, 10.9km/h)

Calculate the average speed of the electrons in m/s. ans.(2.1x10^6 m/s) ps. How do I get the answer?

"When you speak to someone, the air molecules travel from your voice box into the person's ear, thus carrying the sound wave to them." Is the above statement correct? Explain...

No other details, this is all that is provided in the question.

Eyewitness 1 account :(Vehicle 1) The driver claims to have come to a complete stop before entering the intersection. She stated that the other driver ran the stop sign and caused the...

An ordinary light bulb will hum at 13 decibels one meter away in a spherical shaped wave. Explain how many decibels you would hear if you were 2 meters away from 2 light bulbs.

A very curious student was studying electricity and had An unconventional idea. He envisioned two spheres of Same radius R and with volumetric distributions of charge +ρ and -ρ Respectively,...