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
Vikentia [17]
3 years ago
15

A concave mirror is also known as converging mirror

Physics
1 answer:
Usimov [2.4K]3 years ago
7 0

Answer:

true

Explanation:

they have a reflecting surface that is recessed inward

You might be interested in
A driver travels 225 miles in 4 hours and 30 minutes. What was his average speed in mph?
andrew-mc [135]

Answer:

195 is it current pls tell

8 0
3 years ago
An object of mass kg is released from rest m above the ground and allowed to fall under the influence of gravity. Assuming the f
IgorLugansk [536]

Answer:

Explanation:

From, the given information: we are not given any value for the mass, the proportionality constant and the distance

Assuming that:

the mass = 5 kg and the proportionality constant = 50 kg

the distance of the mass above the ground x(t) = 1000 m

Let's recall that:

v(t) = \dfrac{mg}{b}+ (v_o - \dfrac{mg}{b})^e^{-bt/m}

Similarly, The equation of mption:

x(t) = \dfrac{mg}{b}t+\dfrac{m}{b} (v_o - \dfrac{mg}{b}) (1-e^{-bt/m})

replacing our assumed values:

where v_=0 \ and \ g= 9.81

x(t) = \dfrac{5 \times 9.81}{50}t+\dfrac{5}{50} (0 - \dfrac{(5)(9.81)}{50}) (1-e^{-(50)t/5})

x(t) = 0.981t+0.1 (0 - 0.981) (1-e^{-(10)t}) \ m

\mathbf{x(t) = 0.981t-0.981(1-e^{-(10)t}) \ m}

So, when the object hits the ground when x(t) = 1000

Then from above derived equation:

\mathbf{x(t) = 0.981t-0.981(1-e^{-(10)t}) \ m}

1000= 0.981t-0.981(1-e^{-(10)t}) \ m

By diregarding e^{-(10)t} \ m

1000= 0.981t-0.981

1000 + 0.981 = 0.981 t

1000.981 = 0.981 t

t = 1000.981/0.981

t = 1020.36 sec

7 0
3 years ago
13) How much mechanical energy does a swinging bowling ball have if it has 250J of kinetic energy and
Musya8 [376]

Answer: what does a,b,c stand for?

Explanation:

5 0
2 years ago
Read 2 more answers
A soccer ball with a mass of 0.434 kg approaches a player horizontally with a speed of 13.0 m/s. The player kicks the ball with
zaharov [31]

Answer:

a) 15.49

b) Opposite to the ball's initial velocity

c) 258.16N

Explanation:

a)

\Delta p=m \Delta v\\\\\Delta p= (0.434)(13.0-(-22.7)) \\\\\Delta p=(0.434)(35.7)\approx 15.49 kg \cdot m/s

b)

Since the player is kicking the ball in the opposite direction to which it came, the impulse is being directed opposite to the ball's initial velocity.

c)

\Delta p= F \Delta t \\\\\\F=\dfrac{\Delta p}{\Delta t} \\\\\\F=\dfrac{15.49 kg \cdot m/s}{0.06 s}\approx 258.16N

Hope this helps!

7 0
3 years ago
What is the meaning (definition) of the magnet forces, electric forces, electromagnetism
anyanavicka [17]

Answer:

magnetic force acts between moving charged particles

Explanation:

bc i looked it up

3 0
3 years ago
Other questions:
  • Potential Difference Across Axon Membrane The axoplasm of an axon has a resistance Rax. The axon's membrane has both a resistanc
    15·1 answer
  • During both the vernal equinox and _____________, there is an equal amount of night and day.
    15·2 answers
  • A mother and her young child want to play on a seesaw at a playground. The child sits on the end of one side of the seesaw. Wher
    14·1 answer
  • What type of rays would you expect to be used frequently at a hospital to make medical diagnoses?
    7·1 answer
  • A resistor and an inductor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is ma
    13·1 answer
  • What is the magnitude of a vector with components (15 m, 8 m)?
    12·2 answers
  • Volleyball took some of its characteristics from handball and tennis <br><br> True<br> False
    14·1 answer
  • I need help
    7·1 answer
  • Letícia leaves the grocery store and walks 150. 0 m to the parking lot. Then, she turns 90° to the right and walks an additional
    9·2 answers
  • A 0.85 kg soccer ball is booted straight up in the air. If it left the soccer player's foot at a height of 1.0 m and reaches a h
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!