1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andreas93 [3]
3 years ago
7

Carter pushes a bag full of basketball jerseys across the gym floor. The bag weighs 21 newtons. If he pushes the bag 9 meters in

3 seconds, how much power does he use?
Physics
1 answer:
Virty [35]3 years ago
6 0
He uses 63 watts.
..............................

You might be interested in
What property of light is suggested by the formation of shadows​
Mandarinka [93]

Answer:

The reflection and rectilinear propagation of light helps in the formation of shadows and also tells light doesn't penetrate opaque materials.

3 0
3 years ago
I really need help like a lot I only got 2 days so I need help, and the answer has to be right, please!
koban [17]

Answer:

1. Wave period = 0.962 s

2. Will absorb red and blue and reflect green

Explanation:

1.

The wave period is:

T = \frac{\lambda }{v} \\Where: \\T: Wave period \\ \lambda : Wavelength \\v: velocity

Wavelength is the distance between crests. So replacing the given information:

T = \frac{2.50}{2.60} = 0.962 s\\

2. In simple words the color of an object is the light it reflects. A green object reflects green light, and the rest is absorbed (red and blue).

7 0
3 years ago
Read 2 more answers
Which ion channels mediate the falling phase of an action potontial?
White raven [17]

Answer:

Voltage-gated K+ channels

4 0
3 years ago
A swinging pendulum has a total energy of <img src="https://tex.z-dn.net/?f=E_i" id="TexFormula1" title="E_i" alt="E_i" align="a
Zolol [24]

Answer:

\frac{E_{2}}{E_{1}} \approx 1 -\frac{3\theta}{1-\theta} (for small oscillations)

Explanation:

The total energy of the pendulum is equal to:

E_{1} = m\cdot g \cdot (1-\cos \theta)\cdot L

For small oscillations, the equation can be re-arranged into the following form:

E_{1} \approx m\cdot g \cdot (1-\theta) \cdot L

Where:

\theta = \frac{A}{L^{2}}, measured in radians.

If the amplitude of pendulum oscillations is increase by a factor of 4, the angle of oscillation is 4\theta and the total energy of the pendulum is:

E_{2} \approx m\cdot g \cdot (1-4\theta)\cdot L

The factor of change is:

\frac{E_{2}}{E_{1}} \approx \frac{1 - 4\theta}{1-\theta}

\frac{E_{2}}{E_{1}} \approx 1 -\frac{3\theta}{1-\theta}

3 0
3 years ago
Si units are the modern form of the
alekssr [168]
International system of units
4 0
3 years ago
Other questions:
  • The figure (Figure 1) shows the velocity of a solar-powered motorhome (RV) as a function of time. The driver accelerates from a
    9·1 answer
  • If a true heading of 135° results in a ground track of 130° and a true airspeed of 135 knots results in a groundspeed of 140 kno
    5·1 answer
  • 3. An automobile accelerates 1.77 m/sover 6.00 s to reach the freeway speed at
    9·1 answer
  • A person driving a car suddenly applies the brakes. The car takes 4 s to come to rest while traveling 20 m at constant accelerat
    13·1 answer
  • The severity of a tropical storm is related to the depressed atmospheric pressure at its center. In August 1985, Typhoon Odessa
    13·1 answer
  • De la 2surse coerente aflate la distanta d=2 metri una de alta se propaga intrun mediu elastic unde cu viteza =340 m/s.la distan
    5·1 answer
  • Two spheres of the same size and mass roll down an incline. Sphere A is hollow and Sphere B is solid with uniform density. Which
    15·1 answer
  • The transfer of heat between objects that are touching is called what?
    9·2 answers
  • In the experiment, a meter is hooked up to a speaker to monitor the amplitude of the received sound. Suppose the background sign
    6·1 answer
  • If you push a 200 kg box with a horizontal force of 1,172 N and kinetic friction resists the motion with a force of 962 N, what
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!