Answer:
B) R1 = 6 V and R2 = 6V
Explanation:
In series, both resistors will carry the same current.
that current will be I = V/R = 12 / (10 + 10) = 0.6 A
The voltage drop across each resistor is V = IR = 0.6(10) = 6 V
Speed of ball is 19.80 m/s .
<u>Explanation:</u>
We have , a 2.0 kg ball is resting at the top of a 20 m hill. if the ball rolls down the entire hill,We need to find how fast will it be going.Let's find out:
We know that,
Potential energy : This is the energy possessed by an object due to it's virtue of height and is given by , where m is mass , g is acceleration due to gravity & h is height !
Kinetic energy : This is the energy possessed by an object due to it's virtue of motion and is given by , where m is mass & v is the velocity of object !
By conservation of energy :
⇒
⇒
⇒
According to question , h=20 m i.e.
⇒
⇒
⇒
Hence , Speed of ball is 19.80 m/s .
Stretching exercises increase flexibility more than cardio exercises because stretching exercises stretches your muscles in around your body while cardio exercises only work out the muscles of your cardiovascular system. <span>It will help you in endurance but not so much in flexibility.</span>
Answer:
206 m
Explanation:
The energy output of the scooter battery = 135 Wh = 135 W × 3600 s = 486000 J.
If 60.0% accounts for losses, then
useful energy = (100 - 60)% of 486000 J = 40% × 486000 J = 194400 J
The energy needed to move through an altitude = product of weight and altitude
Answer:
If air in a pump is squeezed more, then the air gets hotter because energy is added to it.
Explanation:
A hypothesis is a simple scientific guess that can be investigated. It usually adopts the if -then and because approach to relate variables to the expect output.
The most fitting statement of hypothesis that can be investigated is that "If air in a pump is squeezed more, then the air gets hotter because energy is added to it".
We can find the volume of the air, the pressure of the pump and temperature and discern their relationships.
Based on the kinetic theory, pressure causes increasing collisions between particles and hereby, a gas will be hotter.