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
Rom4ik [11]
3 years ago
12

A car travels along a straight road at a steady 40 MPH.Are the forces on the car balanced or unbalanced? Explain.

Physics
1 answer:
Nutka1998 [239]3 years ago
8 0
They are balanced b/c the motion is constant
You might be interested in
Sound waves with a constant frequency of 250 hertz are traveling through air at stp. what is the wavelength of the sound waves
Deffense [45]

Answer:

wave length is 1.2m

Explanation:

since formula of wave length is v/f

v(speed of sound in air at stp is 300ms^-1)

f(frequency 250hertz)

then wave length is 300÷250 which give 1.2m

5 0
1 year ago
If a 75 W lightbulb is 15% efficient, how many joules of light energy does the bulb produce every minute?
stiks02 [169]

Answer:

1 W = 1 J / sec       Definition of watt is 1 joule / sec

So if a bulb uses 75 J / sec it must use

75 J/s * 60 sec / min = 4500 J/min    energy used by bulb

If bulb is 15% efficient then the light delivered is

P = 4500 J / min * .15 = 675 J / min

4 0
2 years ago
plastic bags have replaced for the packing of the most materials. give these advantages and two disadvantages of using plastic o
Nezavi [6.7K]
It is waterproof and more durable
5 0
3 years ago
an automobile engineer found that the impact of a truck colliding at 16 km/h with a concrete pillar caused the bumper to indent
Zolol [24]
<span>To find the acceleration we are given two facts to begin. The impact at 16 km/h and the dent of 6.4 cm, or 0.064 meters. In solving the problem uniform acceleration is assumed, which would mean the avg speed during the impact was 8 km/hr by taking 16/2. We know distance = rate*time (d=r*t) . So t = d / r, so 0.64/8 = 0.008hr for t. Now we can solve for acceleration by taking a = 16 / 0.008 = 2000 km/hr.</span>
8 0
3 years ago
26. A transformer increases or decreases
uysha [10]

Answer:

Explanation:

Single-phase transformers can operate to either increasing or decreasing the voltage applied to the primary winding. When a transformer is used to “increase” the voltage on the secondary winding with respect to the primary, it is called a Step-up transformer

7 0
3 years ago
Other questions:
  • Which of the following happens when unbalanced forces act on an object? The object remains stationary. The object moves with the
    5·2 answers
  • How long will it take to go 150000m traveling at 50km/hr
    5·1 answer
  • a police car drives with a constant speed of 24 miles per hour .how long will it take to travela distance of 72 miles​
    13·1 answer
  • Accelerating charges radiate electromagnetic waves. calculate the wavelength of radiation produced by a proton in a cyclotron wi
    10·2 answers
  • driving down the highway , you find yourself behind a heavily loaded tomato truck. you follow close behind the truck keeping the
    11·1 answer
  • Select the correct answer.
    5·2 answers
  • Does a ball rolling on an inclined plane have the same acceleration on the way up as it does on the way down?
    11·1 answer
  • Describe the concept of force represent it quantiatively and derive unit of force
    10·1 answer
  • boat travels through a river at a speed of 25 m/s, passing through schools and opening the soundtrack. One student measured freq
    6·1 answer
  • describe the forces acting on a car as it movies along a level highway in still air at a constant speed
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!