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
prisoha [69]
3 years ago
9

How much energy (in kW-h) does a 900 Watt stove use in a week if it is used for 1.5 hours each day?

Physics
1 answer:
ioda3 years ago
3 0

Answer:

9.45 kWh

Explanation:

Energy = Power × time

E = 900 W × (1.5 h/day × 7 day)

E = 9450 Wh

E = 9.45 kWh

You might be interested in
Points a and b lie in a region where the y-component of the electric field is Ey=α+β/y2. The constants in this expression have t
Drupady [299]

Answer:

V_{a} - V_{b} = 89.3

Explanation:

The electric potential is defined by

         V_{b} - V_{a} = - ∫ E .ds

In this case the electric field is in the direction and the points (ds) are also in the direction and therefore the angle is zero and the scalar product is reduced to the algebraic product.

         V_{b} - V_{a} = - ∫ E ds

We substitute

         V_{b} - V_{a} = - ∫ (α + β/ y²) dy

We integrate

          V_{b} - V_{a} = - α y + β / y

We evaluate between the lower limit A  2 cm = 0.02 m and the upper limit B 3 cm = 0.03 m

           V_{b} - V_{a} = - α (0.03 - 0.02) + β (1 / 0.03 - 1 / 0.02)

            V_{b} - V_{a} = - 600 0.01 + 5 (-16.67) = -6 - 83.33

            V_{b} - V_{a} = - 89.3 V

As they ask us the reverse case

             V_{b} - V_{a} = - V_{b} - V_{a}

             V_{a} - V_{b} = 89.3

3 0
3 years ago
Vectors A and B lie in the xy-plane. Vector A has a magnitude of 19.1 and is at an angle of 125.5º counterclockwise from the +x-
Nady [450]

Answer:

a!aaaaaaaaaaaa!aaaaaa

Explanation:

l

8 0
3 years ago
BRAINLEST FOR CORRECT ANSWER
xxMikexx [17]

Answer:

3kg sledgehammer swung at 1.5 m/s

Explanation:

Small Sledgehammer:

Mass:3.0

Velocity:1.5

MASS×VELOCITY=MOMENTUM

3.0×1.5= 4.5 (momentum)

Large Sledgehammer:

Mass:4.0

Velocity:0.9

4.0×0.9=3.6 (momentum)

higher momentum is the smaller Sledgehammer.

3 0
3 years ago
A paper airplane used to study wing designs is an example of a ?
kow [346]
Model I'm guessing. Coz that's using an object to explain
7 0
3 years ago
Read 2 more answers
Consider an object with weight on the Earth W_earth. The gravity of the Earth is g. If it is moved to another planet with gravit
Mazyrski [523]

Answer:

W_{Planet} = \frac{W_{Earth}}{g}\times a

Explanation:

We know that weight of an object on Earth is,

W_{Earth} = m\times g

Thus,

m = \frac{W_{Earth}}{g}

where,

m = mass of an object, which is constant and is independent of gravity

g = acceleration due to gravity on Earth

On the new planet, gravity = a

Thus the weight of the object on the new planet will be

W_{Planet} = m\times a

W_{Planet} = \frac{W_{Earth}}{g}\times a

5 0
3 years ago
Other questions:
  • The theory of biological evolution is generally accepted by the modern scientific community as true: True or False?
    11·1 answer
  • Rank in order, from largest to smallest, the magnitudes of the electric field at the black dot. A. 2, 1, 3, 4 B. 1, 4, 2, 3 C. 3
    5·1 answer
  • If approximately equal volumes of an acid and a bace of a equal strength are combined the resulting solutin should have a pH of
    11·2 answers
  • Material through which a wave passes
    11·1 answer
  • What is the energy level of hydrogen?
    10·1 answer
  • What is the mechanical advantage of the machine shown below? a 5 b 4 c 3 d 2
    15·1 answer
  • Soy flaco y largo, si tu en casa estás, mira en la puerta y me veras​
    9·1 answer
  • What is the difference between sounds that have the same pitch and loudness?
    7·2 answers
  • Do you expect the normal dicrystalline resistance in the forward bias to be pure ohmic resistance or what ?!​
    6·1 answer
  • The motor makes a noise when it is turned on.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!