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
kow [346]
3 years ago
14

Please help me with this science question

Physics
1 answer:
NeX [460]3 years ago
5 0
Heat flows from hotter to colder objects 
metal rod<fire 
hat>snowman
ice cube<warm water
You might be interested in
A stone tumbles into a mine shaft strikes bottom after falling for 4.2 seconds. How deep is the mine shaft
ziro4ka [17]
d = u \times t \: + \frac{1}{2} \times a \times {t}^{2}
Since initial velocity is zero hence , u = 0

=> d = 1/2 * a * t2

d = 0.5 \times 9.8 \times {4.2}^{2}
on solving we get

d = 86.436 metres


Note ; Here Gravitational Acceleration is take as , g = 9.8 m/s2
3 0
3 years ago
A 250 kg car has 6875 kg•m/s of momentum. What is it’s velocity?
liraira [26]

Answer:

v = 27.5 m/s

Explanation:

p = m × v

6,875 = 250 × v

250v = 6,875

v = 6,875/250

v = 27.5 m/s

5 0
3 years ago
A student throws a ball upward with a velocity of 35 m/s. What is the acceleration of the ball as it rises to the top of its arc
lora16 [44]

Answer:

The acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

Explanation:

Let suppose that maximum height of the arc is so small in comparison with the radius of the Earth.

Since the ball is launched upwards, then the ball experiments a free-fall motion, that is, an uniform accelerated motion in which the element is accelerated by gravity. Then, the acceleration experimented by the motion remains constant at every instant and position.

Besides, the gravitational acceleration in the Earth and, in consequence, the acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

7 0
3 years ago
What energy transformation occurs when a skydiver first jumps from a plane
d1i1m1o1n [39]
The skydiver jumping from a plane high up in the sky would most likely experience various energy transformation. For starters, it would undergo a very large gravitational potential energy because of its much higher elevation. After jumping, this energy would eventually transform to kinetic energy due to the force exerted by the gravity.
3 0
3 years ago
Read 2 more answers
A square loop of wire with initial side length 10 cm is placed in a magnetic field of strength 1 T. The field is parallel to the
Fofino [41]

Answer:

2 x 10⁻³ volts

Explanation:

B = magnetic of magnetic field parallel to the axis of loop = 1 T

\frac{dA}{dt} = rate of change of area of the loop = 20 cm²/s = 20 x 10⁻⁴ m²

θ = Angle of the magnetic field with the area vector = 0

E = emf induced in the loop

Induced emf is given as

E = B \frac{dA}{dt}

E = (1) (20 x 10⁻⁴ )

E = 2 x 10⁻³ volts

E = 2 mV

7 0
3 years ago
Other questions:
  • What factors determine the presence of electrical energy?
    10·1 answer
  • A person standing for a long time gets tired when he does not appear to do any work .why?​
    7·1 answer
  • Question:
    7·1 answer
  • Dis hard for me plz plz answer...
    15·1 answer
  • Newton's First Law of Motion states that an object will remain at rest or in uniform motion in a straight line unless acted upon
    14·2 answers
  • Sharon the ant (Aaron’s sister) sits at the edge of a turntable of radius R that is spinning with period T. As she makes one-hal
    6·1 answer
  • When a football is kicked, the action and reaction forces do NOT cancel each other out because
    15·1 answer
  • The potential difference between the plates of a capacitor is 145 V. Midway between the plates, a proton and an electron are rel
    13·1 answer
  • What is the momentum of an object weighing 7.5 kg moving at 1.6 m/s?
    9·2 answers
  • a 4kg box is resting on top of a shelf that is 2m high, what is the boxs gravitational potential relative to the floor​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!