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
d1i1m1o1n [39]
3 years ago
10

José and Laurel measured the length of a stick's shadow during the day. Without knowing the length of the stick, which of their

measurements would you ask José and Laurel to examine more closely? A. 50 cm at 6:00 a.m. B. 75 cm at 12:30 p.m. C. 42 cm at 5:45 p.m. D. 55 cm at 7:15 p.m. dont speak spanish answer with english plz???
Physics
1 answer:
skelet666 [1.2K]3 years ago
5 0

Answer:

Option B.

Explanation:

Assuming the stick is in vertical position, its shadow depends on two factors: its length and the angle between the sun rays and the stick. When the angle is bigger, the lenght of the shadow increases, and vice versa. So, when the sun rays are parallel to the stick, the shadow may be small. Since they are nearly perpendicular to the Earth's surface at 12 o'clock, the shadow of the stick at that time should be minimal. It means that the measured shadow of 75 cm at 12:30 p.m. is almost impossible (Option B).

You might be interested in
A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase,
Helen [10]
The mechanical efficiency = actual work / ideal work

So ζ = 1540 / 1600 * 100% = 96.25%
8 0
4 years ago
Read 2 more answers
Two sound waves have equal displacement amplitudes, but wave 1 has two-thirds the frequency of wave 2. What is the ratio of the
zlopas [31]

Answer:

\dfrac{I_1}{I_2}=\dfrac{4}{9}

Explanation:

c = Speed of wave

\rho = Density of medium

A = Area

\nu = Frequency

\nu_1=\dfrac{2}{3}\nu_2

Intensity of sound is given by

I=\dfrac{1}{2}\rho c(A\omega)^2\\\Rightarrow I=\dfrac{1}{2}\rho c(A2\pi \nu)^2

So,

I\propto \nu^2

We get

\dfrac{I_1}{I_2}=\dfrac{\nu_1^2}{\nu_2^2}\\\Rightarrow \dfrac{I_1}{I_2}=\dfrac{\dfrac{2}{3}^2\nu_2^2}{\nu_2^2}\\\Rightarrow \dfrac{I_1}{I_2}=\dfrac{4}{9}

The ratio is \dfrac{I_1}{I_2}=\dfrac{4}{9}

8 0
3 years ago
Cindy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minu
Kobotan [32]
About 285 meters per minute
4 0
4 years ago
Read 2 more answers
The distance a spring stretches varies directly as the amount of weight that is hanging on it. A weight of 2.5 pounds stretches
julsineya [31]
We use the equation y = kx
y = 18, x = 2.5

18 = k2.5
k = 7.2

x = 6.4
y = 7.2*6.4
y = 46.08

hope this help
5 0
3 years ago
Read 2 more answers
What is the resistance of a 600 W kettle that draws a current of 5.0 A? please answer with steps
lukranit [14]
P=I^2 *R

600 =5.0^2 *R

R=24

Answer: 24 ohms

I hope it’s correcttttttt...

5 1
3 years ago
Other questions:
  • What is the total energy equation?
    9·1 answer
  • Look at the figure, which shows the motion of three balls. The curved paths followed by balls B and C are examples of _____. pro
    12·2 answers
  • A proton beam in an accelerator carries a current of 130 μa. if the beam is incident on a target, how many protons strike the ta
    13·1 answer
  • The Earth moving round the Sun in a circular orbit is acted upon by a force, and hence work must be done on the Earth by this fo
    8·2 answers
  • Sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear to purple. Which of
    10·2 answers
  • Car A has a mass of 1,000 kg and is traveling 60 km/hr. Car B has a mass of 2,000 kg and is traveling 30 km/hr. Compare the kine
    15·2 answers
  • Pilots often take advantage of the ____,which are highly-speed winds between 7km and 16 km above earths surface.
    9·1 answer
  • Helpp!!! Will mark brainlst
    5·1 answer
  • 2. A book with a mass of 2 Kg is resting on a shelf 1.5 m off the floor. How much gravitational
    14·2 answers
  • How to find angular velocity of an object traveling at a constant speed.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!