Answer: 5 m/s^2
Explanation: In order to solve this question we have to use the kinematic equation given by:
Vf= Vo+a*t where V0 is zero.
we know that it takes Vf( 30 m/s) in 6 seconds
so
a=(30 m/s)/6 s= 5 m/s^2
1: decreases, increases, increases, stays the same
2: decreases, increases, increases, stays the same
3: increases, decreases, decreases, stays the same
4: increases, decreases, decreases, stays the same
The resistivity of tungsten can be determined using the empirical equation
Rw = 48.0 (1 + 4.8297 × 10^−3 T + 1.663 × 10^−6 (T^<span>2))
</span>Input the temperature to get the resistivity
For aluminum, you can look for the empirical equation for its resistivity but what is available is a graph between resistivity and temperature. Simply use the graph to determine which temperature will result to the same resistivity of tungsten at 24 C.
Answer:
c.
Explanation:
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Put another way, speed is a scalar value, while velocity is a vector.
Formula
s = \frac{d}{t}
s = speed
d = distance traveled
t = time elapsed
1. Find the total distance.
2 km + 4 km + 4.5 km = 10.5 km
2. Convert this distance into metres.
1 kilometre = 1000 metres
10.5 x 1000 = 10,500 metres
3. Convert the time taken into seconds.
1 minute = 60 seconds
20 x 60 = 1,200 seconds
4. Divide the total distance by the total time taken.
10,500 / 1,200 = 8.75
Your velocity is 8.75 m/s
