Physics

The 300-series Shinkansen trains consist of 16 aluminum cars with a combined mass of 7. 10 X 105 kg. The reduction in mass from the 100-series enables the 300-series trains to reach top speed of 270 km/h. What is the momentum of one of these trains at its top speed? Is themomentum of a 300-series train greater or less than the momentum of a 100-series train traveling at its top speed?
1 Answer
What magnetic field is necessary for 1. 0 m3 of that field to contain 1. 0 J of energy?
1 Answer
A certain vibrating string on a piano has a length of 74 cm and forms a standing wave having two antinodes. (a) Which harmonic does this wave represent?(b) Determine the wavelength of this wave(c) how many nodes are there if 20.0 Newton find the fundamental frequency I'm the next three frequencies that could cause standing wave patterns on the street
1 Answer
The electric field of a 460 mhz radio wave has a maximum rate of change of 4.5 1011 (v/m)/s. what is the wave's magnetic field amplitude?
1 Answer
Two ropes are attached to a tree, F=5.01+3.0/and, F=3.01+2.0f forces of andare applied. The forces are coplanar (in the same plane). Find the direction of the netforce.
1 Answer
A 200-N solid sphere 0. 20 m in radius rolls without slipping 6. 0 m down a ramp that is inclined at 34 with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
1 Answer
a motor supplies power to move a 1000 kg box up a frictionless incline at a constant speed. the box moves 13 m in 1 hour. if the power that needs to be supplied by the motor is 30 w, what is the angle of the incline? answer in degrees.
1 Answer
if you are an astronaut on a planet with twice the mass of the earth, but eight times the radius of the earth, how would the planet's escape velocity compare to earth's escape velocity?
1 Answer
a pollen grain is placed in water state and explain the direction in which it moves
1 Answer
Please describe this grapha. Explain the relationship between variables.b. State if it is a linear or nonlinear graphc. Give an example of what this graph could be about.
1 Answer
A spaceship measures bright flashes of light from a distant star. The spacecraft now heads toward the star at 0. 90c. From the spacecraft's point of view, at what speed do the pulses approach? Express your answer with the appropriate units
1 Answer
A silver atom at rest has a mass of about 1. 81025kg. What is the rest energy of a silver atom?
1 Answer
Five seconds into her run, Selina sees a rabbit and decides to chase it. She accelerates at a rate of 0. 1m/s2. What would be her pace at 10s? Show your work
1 Answer
A car of mass , initially at rest, begins to move with constant acceleration until it reaches, after a time interval , a speed 0. Then, it moves with uniform motion at speed 0 for another time interval. The total distance travelled by the car is a) 0 b) 3 2 0 c) 3 8 0 2 + 0 d) 2 /2 e) 0 2 4
1 Answer
A 2. 99 x 10-6 C charge is movingperpendicular (90) to the Earth'smagnetic field (5. 00 x 10-5 T). If theforce on it is 2. 14 x 10-8 N, how fast isit moving?
1 Answer
what is the net charge when you rub a plastic ruler with fur
1 Answer
Calculate the angular momentum of a 265 kg motorcycle traveling at 25 m/s. Traveling around a circular curve 500 m in radius
1 Answer
A man is pulling a 20 kg cart up a hill that is 5 m high if he used 50 N force how far did he pull the cart for
1 Answer
A humpback whale dove beneath the ocean's surface, and 310 seconds later it sang toanother whale that was 1,800 meters away. The song's sound wave traveled at a constantvelocity of 1,500 meters per second toward the other whale. How much time did it take thesound wave to travel from one whale to the other?
1 Answer
What type of fit would describe the following situations. a. the cap of a ball-point pen b. the lead in a mechanical lead pencil, at the tip c. the bullet in a barrel of a gun
1 Answer
Which landform will occur in a subduction zone where oceanic plates collide?.
1 Answer
What ethical concepts inform your personal code of ethics? How has it changed, if at all, from Unit 1? Explain.
1 Answer
Consider the two-slit experiment. Light strikes two slits that are a distance 0. 0236 mm apart. The path to the third-order bright fringe on the screen forms an angle of 2. 09 with the horizontal. What is the wavelength of the light?
1 Answer
If i drop a ball 15 meters off the ground what will be the velocity right before it hits the ground
1 Answer