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
qwelly [4]
2 years ago
12

A ball is released from a hot air balloon moving downward with a velocity of

Physics
1 answer:
padilas [110]2 years ago
4 0
The answer is b. 12.1 seconds
You might be interested in
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed o
love history [14]

Answer:

13.51 nm

Explanation:

To solve this problem, we are going to use angle approximation that sin θ ≈ tan θ ≈ θ where our θ is in radians

y/L=tan θ ≈ θ

and ∆θ ≈∆y/L

Where ∆y= wavelength distance= 2.92 mm =0.00292m

L=screen distance= 2.40 m

=0.00292m/2.40m

=0.001217 rad

The grating spacing is d = (90000 lines/m)^−1

=1.11 × 10−5 m.

the small-angle

approx. Using difraction formula with m = 1 gives:

mλ = d sin θ ≈ dθ →

∆λ ≈ d∆θ = =1.11 × 10^-5 m×0.001217 rad

=0.000000001351m

= 13.51 nm

6 0
3 years ago
What is weightlessness ?​
VMariaS [17]

Answer:

The state of being free from the effects of gravity.

7 0
3 years ago
3. An astronaut travels to a far-away moon with a 1.5 m long pendulum. She finds it takes
Reika [66]
Have you tried to look this up on Quizlet. I just had a similar question on one on my quizzes & the whole test was on Quizlet
5 0
2 years ago
What causes light to bend when it moves from one transport medium to another
faltersainse [42]

Answer:

The bending of light as it passes from one medium to another is called refraction. The angle and wavelength at which the light enters a substance and the density of that substance determine how much the light is refracted. The bending occurs because light travels more slowly in a denser medium.

hope this helped :))

5 0
2 years ago
How many milliliters of water at 25.0°C with a density of 0.997 g/mL must be mixed with 162 mL of coffee at 94.6°C so that the r
Andre45 [30]

Answer:

The volume of water is 139 mL.

Explanation:

Due to the Law of conservation of energy, the heat lost by coffee is equal to the heat gained by the water, that is, the sum of heats is equal to zero.

Q_{coffee} + Q_{water} = 0\\Q_{coffee} = - Q_{water}

The heat (Q) can be calculated using the following expression:

Q=c \times m \times \Delta T

where,

c is the specific heat of each substance

m is the mass of each substance

ΔT is the difference in temperature for each substance

The mass of coffee is:

162mL.\frac{0.997g}{mL} = 162g

Then,

Q_{coffee} = - Q_{water}\\c_{c} \times m_{c} \times \Delta T_{c} = -c_{w} \times m_{w} \times \Delta T_{w}\\m_{c} \times \Delta T_{c} = -m_{w} \times \Delta T_{w}\\m_{w} = \frac{m_{c} \times \Delta T_{c}}{-\Delta T_{w}} \\m_{w}=\frac{162g \times (62.5 \°C - 94.6 \°C ) }{-(62.5 \°C - 25.0 \°C)} \\m_{w} = 139 g

The volume of water is:

139g.\frac{1mL}{0.997g} =139mL

7 0
3 years ago
Other questions:
  • 3 Points Ricardo is going to take a flight from New York, New York, to Memphis, Tennessee. The flight leaves New York at 10:15 a
    14·2 answers
  • If you attach a 50.0 g mass to the spring whose data are shown in the graph, what will be the period of its oscillations?
    10·1 answer
  • To form a solution_____
    6·1 answer
  • Sally and Ramona were competing in a four-lap, one-mile foot race. Sally’s style was to run at a constant rate of 12 mph. Ramona
    7·1 answer
  • A 2500-N net force acting on a 880-kg car accelerates it at a rate of ______ m/s/s
    15·1 answer
  • this is a non graded disscussion i want to fill out it is just a worksheet to help me get better 30 points
    5·1 answer
  • Heat engines use heat to do work. true or false.
    15·2 answers
  • A long distance runner sees the finish line and accelerates at a rate in 1.2 m/s2 for
    5·1 answer
  • Calculate the force needed to bring a 950-kg car to rest from a speed of 90.0 km/h in a distance of 120 m (a fairly typical dist
    5·1 answer
  • Ball A, moving towards the right, collides with
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!