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
Ostrovityanka [42]
3 years ago
11

Which of the following determines whether light shining on a metal surface will eject electrons from that surface?

Physics
1 answer:
PtichkaEL [24]3 years ago
8 0
From that list, only the frequency makes the difference.

Einstein won his only Nobel Prize for his explanation of this effect.
You might be interested in
Question 10 of 10
Alinara [238K]

it allows only a reduced number of electrons to flow through it.

4 0
3 years ago
Read 2 more answers
A 75,000-watt radio station transmits at 88 MHz. Determine the number of joules transmitted per second. 88 J/s 8800 J/s 2,000,00
Free_Kalibri [48]

Answer:

the first one is the correct answer

6 0
2 years ago
An open pipe, 0.29 m long, vibrates in the second overtone with a frequency of 1,227 Hz. In this situation, the fundamental freq
Andru [333]

Answer:

f = 409 Hz

Explanation:

We have,

Length of the open organ pipe, l = 0.29 m

Frequency of vibration of second overtone, f_2 = 1227 Hz

It is required to find the fundamental frequency of the pipe. For the open organ pipe, the frequency of second overtone is given by :

f_2=\dfrac{3v}{2l}

v is speed of sound

Let f is the fundamental frequency. It is given by :

f=\dfrac{v}{2l}

The relation between f and f₂ can be written as :

f_2=3f\\\\f=\dfrac{f_2}{3}\\\\f=\dfrac{1227}{3}\\\\f=409\ Hz

So, the fundamental frequency of the pipe is 409 Hz.              

6 0
3 years ago
An egg, which can be assumed to b a 5-cm diameter sphere having the thermal properties of water, is initially at a temperature o
dolphi86 [110]

Answer:

The temperature is 90.4°C

Explanation:

See the attached for explanation

Download pdf
6 0
3 years ago
Slope or velocit ime graph represent
Lubov Fominskaja [6]

Answer:

Please check the explanation.

Explanation:

The slope of the velocity-time graph illustrates the change in velocity with respect to change in time.

In other words, the acceleration of the object is defined by the slope of a velocity graph. The acceleration can be obtained by finding the slope at a particular time.

Hence, the slope of the velocity time graph represent represents acceleration.

2. Also the acceleration of any object, like a car or bike, at some discrete instant in time 't' is termed as instantaneous acceleration which can be determined if we may take the derivate of the given velocity function.

3. A vector that has a direction and magnitude of 1 is termed as a unit vector, often called a direction vector.

7 0
3 years ago
Other questions:
  • Bill leaves his 60 W desk lamp on every day, including weekends, for eight hours. After one month (30 days), how much total ener
    7·2 answers
  • what do you call the curved, upper surface of water that commonly appears when using a graduated cylinder? Describe what causes
    12·1 answer
  • If the particles of an object have more kinetic energy than the particles of an object, what must be true?
    13·1 answer
  • Juan lives 100m away from bill whats juan`s average speed if he reaches bill home in 50 s
    10·1 answer
  • What is an electric motor? Explain its operation. 2-3 sentence
    8·2 answers
  • A 0.700-kg particle has a speed of 1.90 m/s at point circled A and kinetic energy of 7.20 J at point circled B. (a) What is its
    7·1 answer
  • Consider the following geometric solids.
    15·2 answers
  • Archerfish are tropical fish that hunt by shooting drops of water from their mouths at insects above the waterÂs surface to knoc
    9·2 answers
  • A cannonball is fired from a cliff that is 50 meters above the ground. The cannonball is fired horizontally with a speed of 120
    7·1 answer
  • the most likely places where stars and planetary systems are forming in the universe are- the most likely places where stars and
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!