Their different just put because their different
Answer:
s₁ = 4.67 m from car A
Explanation:
Since, the cars are moving at a constant speed. Hence, we will apply the equation for uniform motion here:
s = vt
where,
s = distance covered
v = velocity
t = time taken
For Car A:
s₁ = (1.4 m/s)t
For Car B:
s₂ = (2.2 m/s)t
Because the time will be same at the collision. At collision the distance covered by Car A and Car B must be 12 m altogether. Hence:
s₁ + s₂ = 12 m
using values:
(1.4 m/s)t + (2.2 m/s)t = 12 m
t = 12 m/3.6 m/s
t = 3.333 s
Substitute this in the equation of s₁:
s₁ = (1.4 m/s)(3.33 s)
<u>s₁ = 4.67 m from car A</u>
The answer is 4.05 × 10³ kg
The density (D) is a quotient of mass (m) and volume (V) of a substance:
D = m/V
Step 1. Calculate the volume o
We have:
D = 2.70 × 10³ kg/m³
V = 1.50 m³
m = ?
D = m/V
m = D * V
m = 2.70 × 10³ kg/m³ × 1.50 m³ = 4.05 × 10³ kg
Answer:
True.
Explanation:
It is called negative acceleration or deceleration. It is the opposite of acceleration.
Answer:
Explanation:
In a single-slit diffraction pattern, the location of the first minimum is given by
where
L is the distance between the slit and the screen
is the wavelength
a is the width of the slit
In this problem, we have
(location of first minimum)
L = 1.068 m (distance of the screen)
(width of the slit)
Solving the equation for , we find the De Broglie wavelength of the electron:
