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
Setler79 [48]
3 years ago
7

You are trying to move a chair of mass 29.0 kg by pushing it 30* below horizontal, but it is not sliding very easily. The coeffi

cient of kinetic friction between the chair and the floor is 0.625 and the resistive force is 283.6N.
(a) What is the normal force?
(b) What is the value of the angled force that will keep the chair moving at a constant velocity?
Physics
1 answer:
valina [46]3 years ago
7 0
A 3,000-N force gives an object an acceleration of 15 m/s2. The mass of the object is ____.

200 kg

You might be interested in
16. Pitcher's mounds are raised to compensate for the vertical drop of the ball as it travels a horizontal distance of 18 m to t
Pepsi [2]

Answer:

hello tay lor how r u are u in school !

4 0
2 years ago
A car traveling initially at 7.35 m/s acceler-
Flura [38]

Answer:

v_f=9,07~m/s

Explanation:

<u>Constant Acceleration Motion</u>

It's a type of motion in which the velocity of an object changes uniformly in time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

v_f=v_o+at

The car initially travels at vo=7.35 m/s and accelerates at a rate of a=0.824~m/s^2 during t=2.09 s.

The final velocity is:

v_f=7.35+0.824*2.09

\mathbf{v_f=9,07~m/s}

4 0
2 years ago
Mason notices that his boat sinks lower into the water in a freshwater lake than in the ocean. What could explain this?
suter [353]

<u>Answer </u>

D. Salt water is denser than freshwater.

<u>Explanation</u>

A boat is able to float on water because it experiences an upthrust upwards.

The magnitude of the upthrust depends on the density of the liquid.

When the liquid is denser the boat will experience a great upthrust as compared to when in a less dense liquid.

If the boat sinks lower in the freshwater than in salty water, then Salt water is more dense than freshwater.



5 0
3 years ago
Read 2 more answers
Four wires are made of the same highly resistive material, cut to the same length, and connected in series. Wire 1 has resistanc
Paraphin [41]

Answer:

V_2 = \frac{R_2 V_0}{R_1+R_2+R_3+R_4}

Explanation:

The 4 wires are connected in series: this means that the same current flow through them, and the voltage of the battery, V0, is equal to the sum of the voltages on each individual resistor:

V_0=V_1+V_2+V_3+V_4

Also, the equivalent resistance of the series circuit is

R_{eq}=R_1+R_2+R_3+R_4

The voltage V2 across wire 2 is given by Ohm's law:

V_2 = R_2 I (1)

where I is the total current in the circuit, which is given by:

I=\frac{V_0}{R_{eq}}=\frac{V_0}{R_1+R_2+R_3+R_4}

Substituting this into eq. (1), we find an expression for V2:

V_2 = \frac{R_2 V_0}{R_1+R_2+R_3+R_4}

8 0
3 years ago
The tired of a car support the weight of a stationary. If onetire has a slow leak, the air pressure within the tire will_____wit
Westkost [7]

Answer:

d) Decrease, increase, remain constant

Explanation:

If one tire has a slow leak, the air pressure within the tire will_DECREASE____with time due to outflow of air , the surface area between the tire and the road will__INCREASE__in time,due to flattening of tire.

The net force the tire exerts on the road will_REMAIN CONSTANT____in time. It is so because force does not depend upon area. It is pressure which depends upon area. As there is no change in the weight of the car , force on the road will remain constant.

7 0
3 years ago
Other questions:
  • CALCULATING HALF LIFE
    9·1 answer
  • What are 2 types of force fields
    6·1 answer
  • When two resistors are connected in parallel across a battery of unknown voltage, one resistor carries a current of 3.3 a while
    10·1 answer
  • In addition to hot surface temperatures, which characteristic makes mercy different from earth
    6·1 answer
  • At t=0, a stone is dropped from a cliff above a lake; 1.6 s later another stone is thrown downward from the same point with an i
    14·2 answers
  • John is preparing for his way to school. His house is 30 km away. What time will he be in school if he leaves his house at 6:30
    11·1 answer
  • Tony is creating a model showing how Earth rotates over the course of one day. He uses a globe to represent Earth.
    14·1 answer
  • a) A bus of mass 760 kg requires 120 m to reach certain velocity value Vf. Ignore friction and drag forces and assume the bus en
    6·1 answer
  • A force of 50 N was necessary to lift a rock. A total of 150 J of work was done. How far was the rock lifted? ​
    15·1 answer
  • You throw a football straight up. Air resistance can be neglected. When the football is 4.00 mm above where it left your hand, i
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!