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
RSB [31]
3 years ago
13

An angle marking is like a meter stick marking. The marking of 1.2m on a meter stick only means an object is 1.2m long if the ob

ject starts at zero meters. If it starts at 0.2 meters then the object is really 1.0 meters long. You will be making angle calculations from angle markings in a similar fashion.
Given a green marking of 223 degrees and a straight-on marking of 253 degrees, how much has the light bent?
Physics
1 answer:
grandymaker [24]3 years ago
6 0

Answer:

The angle of bend = 20°

Explanation:

Since the question describes that the angle marking is similar to the metre stick marking.

The length of the object when it begins at 0 meters on the meter rule

= 1.2 m

The length of the meter stick when it begins at 0.2 m on the meter rule

= 1.0 m

The difference in length of the object based on the markings

= 1.2 - 1.0 = 0.2 m

If the green marking is on 223°, i.e. θ₂ = 223°

and the straight marking is on 253°, i.e.  θ₁ = 253°

The angle of bend =  θ₁ -  θ₂

The angle of bend = 253° - 223°

The angle of bend = 20°

You might be interested in
The difference in electrical potential energy between two places is called:
Natalka [10]
The answer is B hope this helped you !!
7 0
4 years ago
Read 2 more answers
Suppose that a car traveling to the west (the - x direction) begins to slow down as it approaches a traffic light. Which stateme
Amanda [17]

Answer:

(A) it's acceleration is negative but but it's velocity is positive

Explanation:

In the question it is given that begins to slow down so its speed is decreasing it is does not means that its speed is negative

For example let first the velocity of the car is 30 m/sec and when its velocity decreases it becomes 20 m/sec in 5 sec

So it is not negative at all

Now the acceleration is the rate of change of velocity

a=\frac{dv}{dt}

a=\frac{v_2-v_1}{dt}=\frac{20-30}{5}=-2 m/sec^2

So acceleration is negative here

So option (a) will be the correct option

4 0
4 years ago
A science teacher tells her class that their final project requires students to measure a specific variable and determine the ve
iogann1982 [59]

Answer:

Yes

Explanation:

The velocity measured by Jennifer and Johnny is

v_m = 34.87 m/s

The actual velocity is

v=34.15 m/s

We can calculate the % error of the students measurement as follows:

Err = \frac{v_m - v}{v}\cdot 100 = \frac{34.87 m/s-34.15 m/s}{34.15 m/s}\cdot 100 =0.021 \cdot 100 = 2.1 \%

Which is lower than the 2.5% maximum error required, so the two students will pass the test.

4 0
3 years ago
The chemical equation below shows that hydrogen and oxygen chemically react to form water.
shutvik [7]

Answer:

D

Explanation:

Hydrogen, oxygen, and water are pure substances that each have different properties.

Although the 3 of them are pure substances, but they nonetheless have different properties. These properties could either be their physical properties, or their chemical properties. This is particularly so because since Oxygen and Hydrogen the major components in water have different properties, it is only right if their product, water, has different properties also.

7 0
3 years ago
Read 2 more answers
42,43 and 44 please
Mariana [72]
42) The sailboat travels east with velocity v_e=30 mph, while the current moves south with speed v_s=30 mph. Since the two velocities are perpendicular to each other, he resultant velocity will be given by the Pytagorean theorem:
v= \sqrt{v_e^2+v_s^2}= \sqrt{(30)^2+(30)^2}=42 mph
and the direction is in between the two original directions, therefore south-east. So, the correct answer is
D) 42 mph southeast

43) Since the light moves by uniform motion, we can calculate the distance corresponding to one light year by using the basic relationship between velocity, space and time. In fact, we know the velocity:
v=300,000,000 m/s=3 \cdot 10^8 m/s
and the time is one year, corresponding to:
t=32,000,000 s=3.2 \cdot 10^7 s
therefore, the distance corresponding to one light year is:
S=vt=(3\cdot 10^8 m/s)(3.2 \cdot 10^7 s)=9.6 \cdot 10^{15}m
Therefore, the correct answer is D.

44) For the purpose of the problem, we can assume that the light travels instantaneously from the flash to us (because the distances involved are very small), so the time between the flash and the thunder corresponds to the time it took for the sound to travel to us.
The speed of sound is
v=1100 ft/s=750 mph=335 m/s
And since the time between the flash and the thunder is t=3 s, the distance is
S=vt=(335 m/s)(3 s)=1005 m=0.62 miles
Therefore, the correct answer is A) 3/5 mile.
6 0
3 years ago
Other questions:
  • Why is diffusion faster in gases than in liquids​
    6·1 answer
  • A proton enters a uniform magnetic field of strength 0.5 T at 200 m/s. The magnetic field is oriented at an angle of 30° to the
    10·1 answer
  • Does anyone know the answer to this?
    10·1 answer
  • 20 PTS!!!!!!
    6·2 answers
  • Which vertebrate lays its eggs on land?
    7·1 answer
  • Three resistors of equal resistance are connected in series as shown. Compared to the voltage provided by the battery, voltage a
    15·1 answer
  • When light travels through a small hole, it appears to an observer that the light spreads out, blurring the outline of the hole.
    12·1 answer
  • Metals allow electrons to flow through and complete the circuit. Therefore they are called?
    8·1 answer
  • If your friend was on a skateboard and you pushed them with forward (away from your) with a force of 15N, would you feel a force
    8·1 answer
  • A uniform rod is 2. 0 m long and has mass 15 kg. What is most nearly the rod's mass moment of inertia?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!