it makes the sound louder
it increases the wavelength of the sound
it increases the frequency of the sound
Answer:
It increases the wavelength of the sound and gets softer if the amplitude decreases
Explanation:
And can i have brainlist??
2. A light ball has more inertia than a heavy ball
3. The less momentum a bowling ball has, the easier it is for that ball to knock down pins.
4. A heavy bowling ball is easy to get rolling because of its inertia.
A baseball has more momentum than a tennis ball traveling at the same speed. A light ball has less inertia than a heavy ball. The less momentum a bowling ball has, the easier it is for that ball to knock down pins. A heavy bowling ball is easy to get rolling because of its inertia.
1. True. Momentum is the product of an object's mass and velocity. Since a baseball has more mass than a tennis ball while traveling at the same speed, it has more momentum.
2. False. Inertia is the resistance of an object to changes in its motion. It depends on an object's mass. So, a heavy ball has more inertia than a light ball.
3. False. The more momentum a bowling ball has, the easier it is for it to knock down pins. Momentum is directly proportional to the force at which the ball hits the pins.
4. True. Inertia is the tendency of an object to resist changes in its motion. A heavy bowling ball has more inertia, making it easier to get rolling.
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b.inertia
c.apull
d.all of these
velocity does the bomb strike the earth? (b) How
long does it take the bomb to fall? (c) What is the
bomb's range?
Answers:
a) -171.402 m/s
b) 17.49 s
c) 1700.99 m
Explanation:
We can solve this problem with the following equations:
(1)
(2)
(3)
Where:
is the bomb's final jeight
is the bomb'e initial height
is the bomb's initial vertical velocity, since the airplane was moving horizontally
is the time
is the acceleration due gravity
is the bomb's range
is the bomb's initial horizontal velocity
is the bomb's fina velocity
Knowing this, let's begin with the answers:
With the conditions given above, equation (1) is now written as:
(4)
Isolating:
(5)
(6)
(7)
Since , equation (3) is written as:
(8)
(9)
(10) The negative sign ony indicates the direction is downwards
Substituting (7) in (2):
(11)
(12)
The bomb hits the earth at approximately 540.3 km/hr, it takes approximately 17.5 seconds for the bomb to hit the ground, and the bomb's range is approximately 1.36km.
To answer these questions, we're going to use the principles of kinematics that involve motion in a straight line with constant acceleration (that is the acceleration due to gravity in this case). (a) The velocity of the bomb when it strikes the earth can be calculated using the kinematic equation v = u + gt, where u is the initial velocity (0 m/s since the bomb was dropped, not thrown), g is the acceleration due to gravity (approximately -9.8 m/s²), and t is the time. However, we do not know the time yet, so we will use the equation v = sqrt(2×g×h), where h is the height (1500m), and this gives us approximately 540.3 km/hr. (b) The time it takes for the bomb to fall can be calculated using t = sqrt((2×h)/g) which gives approximately 17.5 seconds. (c) The range of the bomb is the horizontal distance it travels, which is the velocity of the plane multiplied by the time it takes for the bomb to hit the ground, or 350 km/hr × 17.5/3600 hr = approximately 1.36km.
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