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
Mademuasel [1]
3 years ago
11

An electric toy with a resistance of 2.50 Ω is operated by a 3.00-V battery. (a) What current does the toy draw? (b) Assuming th

at the battery delivers a steady current for its lifetime of 4.00 h, how much charge passed through the toy? (c) How much energy was delivered to the toy?
Physics
1 answer:
Leno4ka [110]3 years ago
7 0

Answer:

a) The current is i = 1.2 A

b) The charge is Q = 17280 C

c) The energy is E = 43200 J

Explanation:

a) The current is given by the ohm's law wich is:

i = V/R = 3/2.5 = 1.2 A

b) Since the charge is steady we can use the following equation to find the charge amount in that time:

i = Q/t

Q = t*i

Where t is in seconds, so we have 4h * 3600 = 14400 s

Q = 1.2*14400 = 17280 C

c)  The energy is the power delivered to the toy multiplied by the time:

P = 1.2*2.5 = 3 W

E = P*t = 3*14400 = 43200 J

You might be interested in
A train accelerates from 23m/s to 190m/s in 54 seconds. What was its acceleration?
Ierofanga [76]

Answer:

Use the method on the image and solve it.

3 0
3 years ago
The graphs show the motion of an object in both the x and y directions. Classify the motion of this object.
Natali5045456 [20]

B It is moving in one dimension

6 0
3 years ago
Read 2 more answers
Help me please. I’ll select brainliest!
pishuonlain [190]

Answer:

90 degrees

Explanation:

the answer is 90 because angle a has a square on the angle which means it is 90 degrees

8 0
3 years ago
Read 2 more answers
Which of the following is a heterogeneous mixture? A. salt B. dye in water C. sugar water D. a garden salad
dedylja [7]
D garden salad : )

A heterogenous mixture can be easily taken apart visually/physically
7 0
3 years ago
Mike is standing on the roof of a building looking at the roof of the neighboring building that is 15 meters away and 10 meters
amid [387]

Answer:

Part a)

t = 1.65 s

Part b)

x = 40.4 m

Since the distance of other building is 15 m so YES it can make it to other building

Part c)

v = 27.3 m/s

direction of velocity is given as

[tex]\theta = 26.35 degree

Explanation:

Part a)

acceleration due to gravity on this planet is 3/4 times the gravity on earth

So the acceleration due to gravity on this new planet is given as

a = \frac{3}{4}(9.81)

a = 7.36 m/s^2

now the vertical displacement covered by the canister is given as

y = 10 m

now by kinematics we have

y = \frac{1}{2}gt^2

10 = \frac{1}{2}(7.36)t^2

t = 1.65 s

Part b)

Horizontal speed of the canister is given as

v_x = 24.5 m/s

now the distance moved by it

x = v_x t

x = 24.5 (1.65)

x = 40.4 m

Since the distance of other building is 15 m so YES it can make it to other building

Part c)

Final velocity in X direction will remains the same

v_x = 24.5 m/s

final velocity in Y direction

v_y = v_i + at

v_y = 0 + (7.36)(1.65)

v_y = 12.14 m/s

now magnitude of velocity is given as

v = \sqrt{v_x^2 + v_y^2}

v = \sqrt{24.5^2 + 12.14^2}

v = 27.3 m/s

direction of velocity is given as

\theta = tan^{-1}\frac{v_y}{v_x}

\theta = tan^{-1}\frac{12.14}{24.5}

[tex]\theta = 26.35 degree

6 0
3 years ago
Other questions:
  • Why did corn borers increase after the fields were sprayed for beetles?
    8·2 answers
  • How much work does the electric field do in moving a proton from a point with a potential of +145 v to a point where it is -55 v
    12·1 answer
  • A basketball referee tosses the ball straight up for the starting tip-off. At what velocity must a basketball player leave the g
    6·1 answer
  • If $1,800 is invested in a savings account offering interest at a rate of 4.5% per year, compounded continuously, how fast is th
    14·1 answer
  • I have this sheet and I don’t understand any of it at all
    10·1 answer
  • The term fetus completes which of the following lists to show the correct order of development?
    12·1 answer
  • Define the focus of a concave lens ​
    10·1 answer
  • Plsss answer this plsss answer this plsss answer this plsss answer this ​
    8·2 answers
  • Which equation is used to find an object's acceleration?
    9·1 answer
  • một vật có khối lượng m=1kg trượt trên mặt phẳng nghiêng hợp mới mặt đất một góc a sao cho sina=0.1 .sau khi trượt hết mặt phẳng
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!