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
brilliants [131]
2 years ago
5

A block slides along a frictionless surface and onto a slab with a rough surface. The slab has mass of 4 kg and the block has ma

ss of 2 kg. What is the friction force on the small block at t = 1 second?
Physics
1 answer:
maxonik [38]2 years ago
3 0

Answer: the friction force on the small block at t equals 1 second is 2N

Explanation:

Given the data in the question;

from the slope in the graph provided, we will get the acceleration of the slab

At t = 1 seconds

Slope = acceleration = ( 1 - 0) / ( 2 - 0 ) = 1/2 = 0.5 m/s²

Force = ma = 4 × 0.5 = 2 N

so by Newton's third law

Force on block will be same which is 2N

Therefore the friction force on the small block at t equals 1 second is 2N

You might be interested in
Statement or best answers each question.
Setler79 [48]

Answer:

See Explanation

Explanation:

1. A. Five

2. Both B. and C. say the same thing so I'm a bit confused but the answer is approximately 6,000 degrees C

3. I think B. It is under tremendous pressure

4. D. Both A. and B.

Hope this helps

8 0
3 years ago
A ________ is a rigid layer that surrounds a plant cell, providing structural support.
mrs_skeptik [129]

Answer:

cell wall

Explanation:

A cell wall is a rigid layer that surrounds a plant cell, providing structural support. Other functions of cell walls in plant cells are protection and the transport, absorption, and storage of nutrients and wastes. Cell walls are most commonly found in plants, but they can also be found in other organisms, such as bacteria.

8 0
3 years ago
Read 2 more answers
Suppose a vacuum cleaner uses 120 J of electrical energy. If 45 J are used to pull air into the vacuum cleaner, how efficient is
Zigmanuir [339]
Efficiency = 45J/120J = 0.375

Or

0.375 * 100% = 37.5 %
3 0
3 years ago
A student moves a box across the floor by exerting 56.7 N of force and doing 195 J of
Paha777 [63]

Answer:

A. 3.4 m

Explanation:

Given the following data;

Force = 56.7N

Workdone = 195J

To find the distance

Workdone is given by the formula;

Workdone = force * distance

Making "distance" the subject of formula, we have;

Distance = \frac {workdone}{force}

Substituting into the equation, we have;

Distance = \frac {195}{56.7}

Distance = 3.4 meters.

8 0
2 years ago
What is the best free energy source?<br> Nuclear<br> Solar<br> Natural Gas
Free_Kalibri [48]
Solar it is the cheapest and widely used energy source
4 0
2 years ago
Other questions:
  • ** PLEASE PLEASE HELP A student uses the right-hand rule as shown.
    8·2 answers
  • A 45-kg box is being pushed a distance of 6.4 m across the floor by a force P with arrow whose magnitude is 170 N. The force P w
    13·1 answer
  • Which of the following would be an example of an uncontrolled experiment? The effect of salt and water being mixed at different
    10·1 answer
  • Use the drop-down menus to complete the passage. A galvanometer detects by showing needle movement in . If the wires in this gal
    6·2 answers
  • . Si mi mejor amigo vive a 100 metros de mi casa (una cuadra aproximadamente) y sabe qué cuando pongo una canción determinada es
    14·1 answer
  • Which is a unit for time? a) kilometers b) meters c) days d) meters/second
    14·1 answer
  • Explain why heavy things and light things hit the ground at the same time ?
    12·2 answers
  • We've been learning new ways to use our ears. How do the ears and voice work together?
    13·1 answer
  • Which quantity is a vector quantity?
    15·1 answer
  • Work is best described as?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!