1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Eduardwww [97]
3 years ago
15

At which of the following air temperatures will the

Physics
1 answer:
monitta3 years ago
3 0

Answer:

The answer is: B. -487 ..............

You might be interested in
A tennis ball is thrown into
liraira [26]

Answer:

Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt.

Explanation:

7 0
2 years ago
A heat engine exhausts 3 000 J of heat while performing 1 500 J of useful work. What is the efficiency of the engine
amid [387]

efficiency=work output/work input×100

since it exhausts(use up)3000j of heat that's the work input and the 1500j is the work input

efficiency=1500/3000×100

=50%

3 0
3 years ago
The diagram shows the parabolic path of a projectile that leaves the foot of a kicker with a horizontal velocity of 15 m/s and a
rusak2 [61]

Answer:

I would increase the horizontal velocity or the vertical velocity or both to make the ball go the extra distance to cross the goal line.

Explanation:

In order to increase the horizontal distance covered by the ball, we need to examine the variables involved in the formula of range of projectile. The formula for the range of projectile is given as follows:

R = V₀² Sin 2θ/g

where, g is a constant on earth (acceleration due to gravity) and θ is the angle of ball with ground at the time of launching. The value of θ should be 45° for maximum range. In this case we do not know the angle so, we can not tell if we should change it or not.

The only parameter here which we can increase to increase the range is launch velocity (V₀). The formula for V₀ in terms of horizontal and vertical components is as follows:

V₀ = √(V₀ₓ² + V₀y²)

where,

V₀ₓ = Horizontal Velocity

V₀y = Vertical Velocity

Hence, it is clear from the formula that we can increase both the horizontal and vertical velocity to increase the initial speed which in turn increases the horizontal distance covered by the ball.

<u>Therefore, I would increase the horizontal velocity or the vertical velocity or both to make the ball go the extra distance to cross the goal line.</u>

4 0
3 years ago
A solution that contains a small amount of salt and a large amount of water is said to be a _______ solution.
GrogVix [38]
It's a dilute solution
3 0
3 years ago
Read 2 more answers
The cube has a mass of 72.9 g
disa [49]
Is that on the question or ?
4 0
3 years ago
Other questions:
  • What happens when the thermal energy of a substance increases?
    7·1 answer
  • A box slides down a frictionless plane inclined at an angle θ ¸ above the horizontal. The gravitational force on the box is dire
    11·1 answer
  • Juan is standing on the street. An ambulance moves toward him and then passes by. What best describes the pitch that Juan heats?
    8·1 answer
  • Gravitational pull is determined by ______?
    13·1 answer
  • If the charge on the negative plate of the capacitor is 121 nano-Coulomb, how many excess electrons are on that plate? Write you
    7·1 answer
  • Ball 1 is thrown to the ground with an initial downward speed; ball 2 is dropped to the ground from rest.
    9·1 answer
  • (Q020) Stars a. all explode cataclysmically when they die and contribute their matter to future star generations. b. begin as pr
    5·1 answer
  • Physics help PLEASE 50 points + brainliest for the right answer
    11·1 answer
  • If you were making an electric device and needed a piece that would easily transmit an electric charge and also not react with o
    5·1 answer
  • Please answer me!!! asappp​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!