Physics, 21.02.2020 06:03 emmaguentherp3hjd3

A 1200 kg car pushes a 2200 kg truck that has a dead battery . When the driver stes on he accelerator, the drive wheels of the car push against the ground with force of 4000N. Rolling friction ca be neglected.

(a) What is the magnitude of the force of the car on the truck?
Express you answer to two significant figures and include the appropriate units.
(b) What is the magitude of the force of the truck on the car?
Express your answer to two significant figures and include the appropriate units.

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 10:00

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

Answers: 1

Answer

Physics, 22.06.2019 12:00

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

Answers: 1

Answer

Physics, 22.06.2019 14:10

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Answers: 3

Answer

Physics, 22.06.2019 14:20

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.

Answers: 1

Answer

You know the right answer?

A 1200 kg car pushes a 2200 kg truck that has a dead battery . When the driver stes on he accelerato...

Questions