In the x-direction, the frictional force is the lone force pro
tem on the player
The formula is: Fnet = ma
f = ma
In the y-direction, N, the normal force turns up and mg, the force of gravity turns
down
N = mg (since there is no speeding up in the vertical direction)
f = -uN
=> f = -umg
-umg = ma
=> a = -ug
Using the kinematics equation:
d = (vf^2 - vi^2) / 2a
d = vi^2 / 2ug
d = 4.6^2 / 2(4.508)
d = 2.35 m/s
Answer: 17.03 rad/s^2
Explanation: One of the equation of motion that defines a circular motion with constant acceleration is given below as
ω = ω0 + αt
Where ω = final angular velocity = 9.3 rev/s
ω0 = initial angular velocity = 7.1 rev/s
α = angular acceleration = ?
t = time taken = 6.0s
By substituting the parameters, we have that
9.3 = 7.1 +α(6)
9.3 - 7.1 = 6α
16.3 = 6α
α = 16.3/6
α = 2.71 rev/s^2
We can also give the answer in rad/s^2 ( another unit of angular acceleration) by multipying by 2π
Hence, α = 2.71 × 2π , where π = 3.142
α = 17.03 rad/s^2
Answer:
316.5 cals.
Explanation:
(a) heat needed to change temperature from absolute zero to melting temperature of ice
= mass x specific heat x rise in temperature
= 1 x .5 x 273 = 136.5 cals
b ) heat needed to melt the ice
= mass x latent heat of melting
= 1 x 80 = 80 cals
c ) heat needed to change temperature from melting temperature to boiling temperature.
mass x specific heat x rise in temperature
1 x 1 x 100
= 100 cals
Total heat required
= 136.5 + 80 + 100
= 316.5 cals.
Answer:
Explanation:
mass of proton, m = 1.67 x 10^-27 kg
speed of proton, v = 350 km/s = 350,000 m/s
Momentum of proton, p = mass x speed
p = 1.67 x 10^-27 x 350000 = 5.845 x 10^-22 kg m /s
uncertainty in momentum, Δp = 0.1 % of p
Δp =
According to the principle
where, Δx be the uncertainty in position
Answer:
Inertia = the resistance an object has to a change in its state of motion.
Explanation: