Answer:
Amplitude = 5 cm
Wavelength = 30 m
Explanation:
Amplitude is the maximum displacement. According to the graph, the maximum height is the maximum displacement which is equal to 5cm.
Wavelength is the same distance between two successive Crest or trough.
From the graph the wavelength is 30 metres.
That is,
Amplitude = 5 cm
Wavelength = 30 m
Answer:
39.2 N
Explanation:
The weight of the bar in Newton's is given by
where m is the mass of the bar and is the acceleration due to gravity.
In this problem, the mass of the bar is m=4 kg, therefore its weight in Newtons is
Answer:
Explanation:
Whether you’re just getting started working out, or you’re looking to add strength training to your cardio routine, weight lifting for beginners can seem anything but simple. There’s a bunch of fitness equipment involved—how exactly do you use that big looped resistance band again?—the moves can be confusing, and you may worry that you might not have the strength to do them.
It’s true that weight lifting can appear intimidating—especially if you’re scrolling through social media and seeing people deadlifting double their bodyweight, pressing a loaded barbell over their head, or banging out Superman push-ups where they fly into the air. But it’s important to remember that those are just highlight reels of people who have been lifting for a very long time. When they first began, you can be pretty sure that they started small. Those explosive push-ups? It’s likely they started as a modified, knees-on-the-floor variation.
And strength training for beginners doesn’t have to start with the goal of getting you to that point, either. If you want to squat superheavy weight, beginning a strength training program can definitely help you get there. But it can also just help you get stronger in ways that will help you in everyday life, too, whether it’s carrying all the grocery bags into the house in one trip or squatting down to the floor to pick up your not-so-cuddly cat.
Answer:
try this
Explanation:
The energy of a falling object when it hits the ground is equaled to the energy it starts with because the potential energy is converted into kinetic energy entirely with the height at 0. This means the energy would be 200 J.
RESULT
Answer:
The speed of the piñata immediately after being cracked by the stick is .
Explanation:
Using the conservation of linear momentum:
(1)
Here:
m(s) is the mass of the stick
m(p) is the mass of the piñata
v(is) is the initial velocity of the stick
v(fp) is the final velocity of the piñata
So, we just need to solve the equation (1) to v(fp).
I hope it helps you!